1results about How to "Protection from pollution" patented technology

This application provides a zebra crossing marking device for application, relating to the field of zebra crossing construction. This application involves setting a second hollow hexagonal plate and an internally threaded tube on a hollow cotton rope. After the hollow cotton rope is wound up, the internally threaded tube is connected to a first externally threaded tube to seal the first externally threaded tube, thereby preventing powder from seeping out of the first externally threaded tube, reducing powder waste, lowering construction costs, and protecting other tools from contamination by successfully preventing powder seepage, thus reducing maintenance and replacement costs caused by tool contamination.