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 55kg. The bottom horizontal tensile strength is 4kg. The top tensile strength is 8kg. The compression strength is 3.5kg. The general strength is 16kg. The bottom tensile strength is 7kg. The deflection resistance is 29kg. The zipper is applicable to trousers.