Ziplock bags can be used not only for cold compresses, but also for good results. What is the principle of ziplock cold compress? Because when the skin surface or subcutaneous bleeding, apply a bag containing ice cubes to the bleeding site can help blood clotting. Since the ziplock bag is dense and leak-proof, the ziplock…
Ziplock bags are mainly used for product packaging, storage of food, jewelry, medicines, cosmetics, frozen food, postal products, etc., moisture-proof, waterproof, insect-proof, prevent things from scattering, play an inductive role, give buyers a neat and standardized image, and can be repeated It can be sealed tightly with just one touch, non-toxic, tasteless, flexible, easy to…
Polyethylene is odorless, non-toxic, feels like wax, has excellent low temperature resistance (minimum use temperature can reach -70 ～ -100 ℃), good chemical stability, can withstand most acid and alkali erosion (not resistant to oxidizing properties) Acid), insoluble in ordinary solvents at room temperature, low water absorption, and excellent electrical insulation properties; but polyethylene is…