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267 results about "Ionic compound" patented technology

In chemistry, an ionic compound is a chemical compound composed of ions held together by electrostatic forces termed ionic bonding. The compound is neutral overall, but consists of positively charged ions called cations and negatively charged ions called anions. These can be simple ions such as the sodium (Na⁺) and chloride (Cl⁻) in sodium chloride, or polyatomic species such as the ammonium (NH⁺₄) and carbonate (CO²⁻₃) ions in ammonium carbonate. Individual ions within an ionic compound usually have multiple nearest neighbours, so are not considered to be part of molecules, but instead part of a continuous three-dimensional network, usually in a crystalline structure.

Amphoteric self-supporting single-ion polymer electrolyte diaphragm as well as preparation method and application thereof

The invention discloses an amphoteric self-supporting single-ion polymer electrolyte diaphragm as well as a preparation method and application thereof. The diaphragm is prepared by physically doping a self-supporting single-ion polymer with an amphoteric ionic compound. The polymer electrolyte provided by the invention has a high-molecular polymer structure, negative ions of the polymer electrolyte are relatively fixed in an electrochemical reaction process, and single-ion conduction of lithium ions can be realized, so that uniform deposition of the lithium ions on the surface of a negative electrode is realized, and formation of lithium dendrites is inhibited. Meanwhile, the doped zwitter-ions can increase the dielectric constant of the electrolyte, so that the overall lithium ion conductivity of the electrolyte diaphragm is improved, all the components of the diaphragm are electrolyte components, an additional binder does not need to be added, and the self-supporting electrolyte diaphragm with qualified mechanical properties can be prepared.
Owner:SALFA (WUHAN) NEW ENERGY TECH CO LTD

Degradable plastic film and preparation method thereof

The invention relates to the technical field of plastic films, and provides a degradable plastic film and a preparation method thereof.The mode that microorganisms are placed between an inner layer film and an outer layer film in advance is adopted, auxiliary degradation of the degradable plastic film after use is achieved, the meeting and matching links of the degradable plastic film and the microorganisms in the external environment are reduced, and the degradation efficiency of the degradable plastic film is improved. The degradable plastic film is good in degradation environment matching performance and shorter in degradation period and comprises an inner-layer film and an outer-layer film, the inner-layer film and the outer-layer film are formed in a heating and rolling mode, a plurality of film-closing-free areas are arranged between the inner-layer film and the outer-layer film, microbial carriers are arranged in the multiple film-closing-free areas, and the microbial carriers are arranged between the inner-layer film and the outer-layer film. The inner layer film and the outer layer film are both formed by casting matrix plastic, and the matrix plastic is prepared from the following raw materials in parts by weight: 55 to 68 parts of polyvinyl chloride, 40 to 50 parts of polylactic acid, 22 to 28 parts of polyvinyl acetate, 15 to 20 parts of plant straw, 7 to 10 parts of ionic compound, 11 to 14 parts of flexibilizer, 14 to 20 parts of coupling agent and 13 to 16 parts of strength additive.
Owner:LISHUI YUANLONG NEW MATERIALS CO LTD

Power generation element

The present invention provides a power generation element which is capable of achieving a larger electromotive force by utilizing humidity fluctuations in the environment. The present invention specifically provides a power generation element which generates electric power by utilizing humidity change due to water vapor in the environment. According to the present invention, a first chamber that is blocked from water vapor in the environment and a second chamber that is opened to water vapor in the environment are separated from each other by means of an ion permeable membrane, and are subsequently filled with an aqueous electrolyte that is composed of an aqueous solution of a deliquescent ionic compound, respectively. Meanwhile, the first chamber and the second chamber are respectively provided with electrodes. The ion permeable membrane is composed of an electrolyte which is capable of conducting ions which are not hydrated.
Owner:NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE & TECHNOLOGY

Preparation method of nanofiltration membrane

The invention belongs to the technical field of semipermeable membrane preparation, and particularly relates to a preparation method of a nanofiltration membrane. The preparation method comprises the following steps: (1) cleaning the supporting layer for later use; the preparation method comprises the following steps: blending diamine, an amino beta-cyclodextrin derivative, an inorganic hybridizing agent, a zwitterionic compound and water to obtain a water phase for later use; blending aromatic acyl chloride, a cosolvent and an organic solvent to obtain an oil phase for later use; and (2) sequentially carrying out primary impregnation in a water phase, membrane scraping, secondary impregnation in an oil phase and heating curing on the supporting layer, and finally carrying out post-treatment to obtain the nanofiltration membrane. The nanofiltration membrane is prepared by introducing the amino beta-cyclodextrin derivative, the inorganic hybridization agent and other components into polyamide, so that the water flux of the polyamide nanofiltration membrane and the capability of effectively separating ions with different valence states are further improved.
Owner:SHANDONG ZHAOJIN MOTIAN

Modifier for solid electrolytes and power storage device

The present invention provides a modifier for solid electrolytes that comprises: an ionic compound which comprises a pyrrolidinium cation and an anion including fluorine or a cyano group; a borate ester which has a polymerizable functional group; and a lithium salt.
Owner:NOF CORP +1

Ionic Slurry for Electrochemical Mechanical Polishing

A slurry for electrochemical mechanical polishing of semiconductor workpieces (e.g., silicon carbide semiconductor wafers) is provided. In one example embodiment, the slurry contains a solvent an abrasive particle, and an ionic compound. The ionic compound contains a cation and an anion. One or more of the cation or the anion is bonded to the abrasive particle, for instance, with a functional group or other bonding.
Owner:WOLFSPEED INC

Org / ZnSO4 electrolyte, preparation method thereof and application of Org / ZnSO4 electrolyte in secondary battery

The invention provides an Org / ZnSO4 electrolyte, a preparation method of the Org / ZnSO4 electrolyte and application of the Org / ZnSO4 electrolyte in a secondary battery. In the Org / ZnSO4 electrolyte, a solute is Org and ZnSO4, and a solvent is deionized water and an organic solvent, or is only deionized water. Org is any one or a combination of more of aromatic organic molecules, nitrogen-containing organic molecules, fluorine-containing organic molecules or ionic compounds. The preparation method of the Org / ZnSO4 electrolyte comprises the following steps: preparing a zinc sulfate aqueous solution and an Org solution; and adding the Org solution into the zinc sulfate aqueous solution, and uniformly stirring to obtain the Org / ZnSO4 electrolyte. The Org / ZnSO4 electrolyte formula prepared by the invention is used as an aqueous zinc ion secondary battery electrolyte for the first time. Compared with the existing electrolyte, the electrolyte shows excellent corrosion resistance, rate capability and cycling stability. In addition, the Org / ZnSO4 electrolyte formula process is simple and easy to control, the controllability and efficiency of the preparation process are greatly improved, the cost is low, and industrial implementation is easy.
Owner:TONGJI UNIV

Preparation method of energy-saving ion compound desulfurizer

The invention relates to the technical field of compound desulfurizers, and particularly discloses a preparation method of an energy-saving ion compound desulfurizer. The energy-saving ionic compound desulfurizer is prepared by mixing the following raw materials in parts by mass: 80-85 parts of N-methyldiethanolamine, 5-10 parts of a modified defoaming agent, 5-7 parts of polyethylene glycol dimethyl ether and 1-3 parts of sodium hexametaphosphate. The modified defoaming agent is obtained by polymerizing an acrylamide monomer, reacting the polymerized acrylamide monomer with benzyl-protected benzenesulfonic acid, and then performing debenzylation reaction and water dissolution. When the modified defoaming agent is used as an additive component of the energy-saving type ion compound desulfurizing agent, the cycle service life of N-methyldiethanolamine can be prolonged, and the prepared energy-saving type ion compound desulfurizing agent has relatively high foaming resistance and oxidative degradation resistance.
Owner:ZIBO KAIMEIKE IND & TRADE CO LTD

Preparation method of gas sensitive material, gas sensor and preparation method of gas sensor

The invention discloses a preparation method of a gas sensitive material, a gas sensor and a preparation method of the gas sensor, and relates to the field of sensors. The method comprises the following steps: mixing a hydrofluoric acid solution with an MAX phase material to prepare an MXene solution; the preparation method comprises the following steps: mixing a graphene oxide solution, a tungsten ion compound, ascorbic acid and an MXene solution, so that graphene oxide in the graphene oxide solution is reduced by the ascorbic acid, and an rGO / MXene / WO3 mixed solution is prepared; the rGO / MXene / WO3 mixed solution is subjected to a hydrothermal reaction, and the rGO / MXene / WO3 gas sensitive material is prepared. The invention aims to solve the problem that NO2 cannot be accurately and rapidly detected due to poor gas-sensitive performance of the existing gas-sensitive material.
Owner:SHENZHEN NUOAN ENVIRONMENTAL & SAFETY INC

Preparation method of doped rutile titanium dioxide with selective exposure of {101} and {110} crystal faces and low defect concentration

The invention relates to the field of titanium dioxide photocatalytic water decomposition, in particular to a preparation method of doped rutile titanium dioxide with selective exposure of {101} and {110} crystal faces and low defect concentration. The preparation method comprises the following steps: by taking a titanium elementary substance or a titanium-containing compound as a precursor, adding a heterogeneous metal element compound of which the valence state is lower than positive tetravalence as a morphology control agent and a defect inhibitor, fully mixing with an ionic compound serving as a molten salt medium, carrying out one-step high-temperature heat treatment in an oxidizing or reducing atmosphere, cooling, and washing off the molten salt medium, thereby obtaining the titanium-containing composite material. The rutile-doped titanium dioxide nano or micron particles with specific crystal face selective exposure and low defect concentration are obtained. According to the invention, a specific heterogeneously doped metal element compound is used as a morphology regulating agent and a defect inhibitor, so that the synergistic regulation and control of the microstructure and surface and bulk phase defects of rutile titanium dioxide are realized. Therefore, the separation efficiency of rutile titanium dioxide bulk phase photo-generated charges and the activity of photocatalytic decomposition of water to produce hydrogen are greatly improved.
Owner:INST OF METAL RESEARCH - CHINESE ACAD OF SCI

An ionic compound and a method for catalytic synthesis of cyclic carbonates

The application belongs to the field of catalytic synthesis of fine chemical products, and particularly relates to an ionic compound and a method for catalytically synthesizing cyclic carbonate. The application provides an ionic compound, which comprises an anion as shown in formula (I) or formula (II); wherein X is selected from O, S and Se, and the value of L is 0 or 1; the anion in the ionic compound has suitable nucleophilicity and leaving property, can be combined with other active positive ions or metal ions to form a catalytic system with good solubility, and is particularly suitable for being used in a cycloaddition reaction involving carbon dioxide. Meanwhile, the application further provides a catalytic method for synthesizing cyclic carbonate, which uses a catalytic system containing the ionic compound, so that cyclic carbonate can be synthesized in a solvent-free, low-halogen or halogen-free, low-catalyst-amount and mild reaction condition mode with high efficiency, high conversion rate and high chemical selectivity.
Owner:SOUTH CHINA UNIV OF TECH

Method for monitoring chloride content in porous materials

The present invention relates to a method for monitoring chloride content in porous materials, preferably in reinforced concrete structures, in which a voltammetric sensor comprising a metal electrode is used, characterised in that the electrode metal forms poorly soluble ionic compounds with chlorides and a potentiodynamic excitation signal is applied to the electrode, causing an oxidation-reduction process to take place that favours the formation of the poorly soluble ionic compounds. The formation of the poorly soluble ionic compounds produces a response in the form of electric current intensity that is related to the chloride content in the monitored material.
Owner:UNIV POLITECNICA DE VALENCIA

Synthesis method and reaction system of arylamine compound

The application discloses a synthesis method and a reaction system of an aromatic amine compound. The synthesis method of the aromatic amine ionic compound comprises the following steps: in a continuous flow reactor, carrying out a nucleophilic substitution reaction on water, an ionic compound A and a nitrogen source Y to obtain the aromatic amine ionic compound. The preparation method has the characteristics of short reaction time, simple and safe operation and no amplification effect.
Owner:SHANGHAI SYNTHEALL PHARM CO LTD +2

Rheology control agent

The invention deals with a composition comprising a liquid carrier, which is liquid at a temperature of 23 °C, a block co-polymer comprising at least one block (A) wherein block (A) comprises at least one amide group and at least one block (B) having no amide groups, dissolved in the liquid carrier, wherein block (A) does not contain aromatic groups, and an ionic compound, wherein the ionic compound comprises at least one of CaCl2, MgCl2, SrCl2, ZnCl2, carbamimidoylazanium chloride, NaSCN, NaBr, dissolved in the liquid carrier.
Owner:BYK CHEMIE GMBH

Glycerophosphoinositol in preventing and treating covid-19 infections and method for obtaining it

Glycerophosphoinositol (GPI) is used in preventing and treating COVID-19 infections. An environmentally sustainable method is for obtaining glycerophosphoinositol. In particular, a process for preparing glycerophosphoinositol from crude or partially purified phospholipid mixtures, includes in sequence: a) hydrolysis of a crude or partially purified phospholipid mixture by treatment with PLA1 and PLA2 enzymes; b) microfiltration of the mixture from step a) and subsequent ultrafiltration and nanofiltration of the microfiltrate to give a concentrated aqueous fraction of reaction products; c) electrodialysis of the aqueous fraction of step b) for separating ionic compounds from neutral compounds; d) ion exchange chromatography. Moreover, glycerophosphoinositol is used in preventing and treating a COVID-19 syndrome.
Owner:PLANTAREI BIOTECH SRL

A nano-MOF with pH-responsive function for targeted dual-drug delivery thrombolysis and its preparation method

The present invention provides a nanoscale MOF with pH-responsive function for targeted dual-drug thrombolysis and a preparation method thereof. Hollow mineralized nanoscale calcium carbonate powder is mixed with γ-cyclodextrin and a potassium ion compound, ultrasonically dispersed, and then incubated to form a cyclodextrin MOF embedded with calcium carbonate. An RGD polypeptide is grafted onto the surface of the cyclodextrin MOF embedded with calcium carbonate to obtain MOF-RGD. The grafted MOF-RGD is impregnated into ethanol containing an anticoagulant drug, air-dried, and then mixed with a thrombolytic drug, so that the thrombolytic drug is loaded on the surface of the nanoscale MOF to obtain a pH-responsive targeted nanoscale MOF. The present invention forms a nanoscale MOF with a targeted function, which combines thrombolysis and anticoagulation, and realizes the treatment and prevention of deep vein thrombosis.
Owner:SOUTHWEST UNIV

Resist top coating composition and method of forming pattern using the same

Provided are a resist top coating composition and a method of forming a pattern using the same. The resist top coating composition includes a copolymer including a first structural unit represented by Chemical Formula M-1 and a second structural unit represented by Chemical Formula M-2; a photoacid generator; and a solvent, in which the photoacid generator is a nonionic compound including an organic sulfonate group or an ionic compound including, as an anion, at least one selected from the group consisting of a conjugated base of an inorganic acid and a conjugated base of an organic sulfonic acid.
Owner:SAMSUNG SDI CO LTD

A ZIF-derived zinc-cadmium sulfur photocatalyst, its preparation method and application

A ZIF-derived zinc-cadmium sulfide photocatalyst, its preparation method, and its application are disclosed. The catalyst, by molar fraction, comprises: 35-50% 2-methylimidazole; 0-7.7% divalent cadmium ion compound; 0-7.7% divalent zinc ion compound; 7-10% thioacetamide; and 35-50% amines. The preparation method involves: preparing a 2-methylimidazole solution and a cadmium-zinc mixed solution separately; then preparing a ZIF precursor solution with cadmium and zinc as the central metals; adding thioacetamide to the precursor solution; transferring the solution to a polytetrafluoroethylene liner and hydrothermally treating it; finally collecting the hydrothermally treated solution, centrifuging, washing, drying, and grinding to obtain the ZIF-derived zinc-cadmium sulfide photocatalyst. The catalyst prepared by this invention has a large specific surface area and exhibits significant catalytic effects in photocatalytic water splitting for hydrogen production. Furthermore, the catalyst has a stable structure and can be recycled for a long period without a significant decrease in the hydrogen production rate.
Owner:XI AN JIAOTONG UNIV

Method for monitoring chloride content in porous materials

The present invention relates to a method for monitoring chloride content in porous materials, preferably in reinforced concrete structures, in which a voltammetric sensor comprising a metal electrode is used, characterised in that the electrode metal forms poorly soluble ionic compounds with chlorides and a potentiodynamic excitation signal is applied to the electrode, causing an oxidation-reduction process to take place that favours the formation of the poorly soluble ionic compounds. The formation of the poorly soluble ionic compounds produces a response in the form of electric current intensity that is related to the chloride content in the monitored material.
Owner:UNIV POLITECNICA DE VALENCIA

Novel environment-friendly extreme pressure lubricant and preparation method thereof

The invention discloses a novel environment-friendly extreme pressure lubricant, which relates to the technical field of petrochemical industry, and is composed of an ionic compound generated by a neutralization reaction and / or electrostatic interaction between phytic acid and alkyl tertiary amine. Compared with the prior art, the novel environment-friendly extreme pressure lubricant has the beneficial effects that 1, the novel environment-friendly extreme pressure lubricant is simple in preparation method and small in odor effect, and has a corrosion inhibition effect on nonferrous metals; 2, compared with most good extreme pressure lubricants in the market, the friction coefficient is small under the condition of the same addition amount, the tested four-ball friction spot trace is not obvious, and the shape is relatively round (close to a circle); and 3, the novel environment-friendly extreme pressure lubricant has good dissolution and dispersibility in fully synthetic cutting fluid, micro-emulsion cutting fluid, semi-synthetic cutting fluid, emulsified cutting fluid, cutting oil and lubricating oil, and is a water-based and oil-based universal lubricant product.
Owner:舒甫恩

Composition and composite material

A composition is provided comprising an organic ionic compound comprising at least one C = C double bond, a polythiol compound comprising a plurality of thiol groups, and a bridging compound comprising a plurality of C = C double bonds. A composite material, a method of forming the composite material, and an electrochemical device comprising the composite material are also provided.
Owner:AGENCY FOR SCI TECH & RES

Composite coating for eliminating pollution by heavy metal chromium and VOCs from source and preparation method

Disclosed is a composite coating for eliminating pollution by chromium and VOCs from a source, the coating comprising a conversion film layer and a coating surface layer. The conversion film layer is made of a surface pretreatment liquid, and the surface pretreatment liquid comprises the following components: an organic compound A having an aromatic ring and at least two phenolic hydroxyl groups in the molecule thereof, or a hydrate thereof; an ionic compound B containing zirconium and / or titanium and fluorine; a mixed solution C containing manganese fluoride; and an inorganic salt D containing potassium ions or sodium ions. The coating surface layer is an FEVE-type fluorocarbon powder coating layer. Also disclosed is a preparation method for the described composite coating.
Owner:GUANGDONG PROVINCIAL ACAD OF BUILDING RES GRP CO LTD

Ionic compound, composition, functional material, silver halide photosensitive material, and diffusion-transfer-type silver halide photosensitive material

Provided are: an ionic compound having an anion structure represented by formula 1; and a composition, a functional material, and a silver halide photosensitive material or a diffusion-transfer-type silver halide photosensitive material containing the ionic compound. In formula 1: w represents an integer of 1 or more; x represents an integer of 2 or more; Sil1 represents a substituent containing at least three Si atoms, wherein a plurality of Sil1 may be the same or different; L1 represents a divalent linking group, wherein a plurality of L1 may be the same or different; and R represents an (x + w)-valent organic group containing a carbon atom.
Owner:FUJIFILM CORP

Method for preparing Lewis acid gas

The invention belongs to the field of Lewis acid gas preparation, and particularly discloses a method for preparing high-purity Lewis acid gas, the chemical reaction general formula of the high-purity Lewis acid gas is C + AF-+ X-> C + XF-+ A, C + AF-is a non-volatile ionic compound, C + is K +, Cs +, quaternary ammonium cation and imidazole cation, A refers to a Lewis acid gas molecular formula, and X is another solid or liquid Lewis acid. C < + > is a quaternary ammonium cation, the structural general formula of the quaternary ammonium cation is [NR1R2R3R4] < + >, and R1, R2, R3 and R4 are saturated hydrocarbon chains or saturated hydrocarbon chains containing ether bonds. According to the method disclosed by the invention, the reaction in the preparation process is controllable, the product purity is high, the reaction speed is high, continuous production can be carried out, massive transportation and storage of Lewis acid gas are avoided, and the safety problems in links of production, storage, transportation and the like of the Lewis acid gas are fundamentally solved.
Owner:HUAZHONG UNIV OF SCI & TECH

Separation and concentration system for ionic compounds in sample, and method for analyzing ionic compounds using same

A system for separating and concentrating ionic compounds in a sample is provided herein. In some embodiments, a system includes at least one sample separation device, a flexible holder having a plurality of slots, wherein each slot is configured to have a sample separation device inserted therein, wherein the at least one sample separation device is inserted into a slot of the flexible holder; and an electrode for applying a voltage to the device, wherein the at least one sample separation device comprises a separation portion, a first storage portion, and a second storage portion, wherein the first and second storage portions are positioned on opposing sides of the separation portion, wherein the separation portion is folded at a predetermined interval to form two or more discrete base units.
Owner:LG CHEM LTD

High-strength self-assembly gel foam oil-displacing agent and preparation method thereof

The invention provides a high-strength self-assembly gel foam oil displacement agent and a preparation method thereof, and belongs to the field of chemical oil displacement. The high-strength self-assembly gel foam oil-displacing agent is prepared from the following components: a ternary amphiphilic hydrophobic association copolymer, a zwitterionic surfactant, a nonionic surfactant, heat-resistant polybasic acid, a counter-ion compound, a chelating agent and formation water. According to the self-assembly gel foam oil-displacing agent, quadruple interaction is formed among molecules of all the components, the strength of foaming liquid is remarkably improved, generated nitrogen foam is fine, rich and good in stability, large cracks and karst caves can be blocked in a fracture-cavity type oil reservoir, the swept volume can be effectively enlarged, the crude oil recovery rate of the fracture-cavity type oil reservoir can be remarkably increased, and the oil-displacing effect is good. The foaming agent does not generate precipitates with calcium and magnesium ions, and does not separate out due to salt.
Owner:CHINA PETROLEUM & CHEMICAL CORP +1

Surface protection films, optical components, and electronic components

The present invention discloses a surface protective film, an optical component, and an electronic component, belonging to the technical field of protective films. A urethane adhesive composition comprises at least a urethane prepolymer and an antistatic functional agent; the antistatic functional agent comprises an ionic compound and a surfactant, wherein the addition ratio of the ionic compound to the surfactant satisfies the following: 2 ≤ ionic compound / surfactant ≤ 50; the urethane prepolymer is obtained by reacting a first polyol with an organic polyisocyanate compound, wherein the first polyol comprises a polyether polyol and a polyester polyol, wherein the addition ratio of the polyether polyol to the polyester polyol satisfies the following: 5 ≤ polyether polyol / polyester polyol ≤ 50. The present invention solves the problem of ionic compound precipitation by utilizing a specific addition ratio of the polyether polyol to the polyester polyol. This, in conjunction with the specific addition ratio of the ionic compound to the surfactant, ultimately achieves a balance between low peeling charge voltage and low ion precipitation concentration in the surface protective film.
Owner:ZHEJIANG DONGROU NEW MATERIAL CO LTD

Electrolyte composition and battery

The present disclosure provides an electrolyte composition containing a polymer (A) having an anionic functional group and an alkali metal ion which is a counter cation of the anionic functional group, an ionic compound, and a nonionic organic solvent, the electrolyte composition having an energy at which lithium ions dissociate from the anionic functional group of 150 kcal / mol or more.
Owner:SUMITOMO CHEM CO LTD +1

Etching liquid composition for IGZO film layer 4mask process and application of etching liquid composition

The invention provides an etching liquid composition for a 4mask process of an IGZO (Indium Gallium Zinc Oxide) film layer and application of the etching liquid composition. The etching liquid composition comprises a main agent and an auxiliary agent, the main agent comprises hydrogen peroxide, inorganic acid, a sulfonic acid compound, amino acid, an F ionic compound, organic alkali, a stabilizer and a metal corrosion inhibitor; and the auxiliary agent comprises the following components in parts by weight: inorganic acid, a sulfonic acid compound, amino acid, an F ionic compound, a stabilizer and a metal corrosion inhibitor. According to the formula, it is guaranteed that the copper layer, the molybdenum alloy layer and the IGZO layer are evenly etched under the same condition, the matched etching rate is achieved, and therefore the metal interface layer with the excellent morphology is obtained. According to the etching solution, a mask process can be reduced, the IGZO layer and the S / D layer can be etched at the same time, and the etched TFT device is large in line width and stable in performance and has wide application prospects and huge commercial value.
Owner:NANJING HEXIANDA MICROELECTRONICS TECHNOLOGY CO LTD