The zipper bears high tenacity and corrosion resistance. Due to the fact that the tape has been treated with stone washing, dry cleaning, sand wash, acid rinsing, anti-crease finish and rinsing, it bears no decoloration and low water shrinkage. The tape is free of nitrogen, heavy metals, nickel, carcinogens and allergens. Zipper teeth are uniform. The zipper is in strict conformity to ASTM standards. The lateral tensile strength is 57kg. The bottom horizontal tensile strength is 20kg. The top tensile strength is 13kg. The sliding pull resistance of the box is 6kg. The compression strength is 8kg. The general strength is 23kg. The bottom tensile strength is 7kg. The deflection resistance is 35kg. The zipper is applicable to jeans, washer wrinkle trousers and casual trousers, etc.