Medical grade materials: imported high-quality polypropylene PP and polyethylene HDPE are selected as raw materials, with excellent physical and chemical indexes and strong pressure resistance, impact resistance and acid and alkali resistance.High temperature and high pressure resistance: PP material can withstand high temperature and high pressure sterilization at 121°C, and HDPE material can withstand low temperature and-80 C refrigeration.Uniform wall thickness without hanging on the wall: the bottle body has uniform wall thickness, high gloss, no color difference, smooth inner and outer walls, and the reagent does not hang on the wall.Good sealing performance: professional anti-leakage bottle mouth design is adopted, without the protection of inner cover or inner pad, and the sealing performance is excellent.