chemical agent

PA has the good anti-homoiothermy, anti-weary and changes the strength, the anticreep, and the good wearability, bears the chemical agent.

PA具有良好恒温性、疲劳和应力、性、及较佳磨损性、剂性。

The external factor like chemical agent, the cosmetics, the zootoxin, the fish and shrimp, the pollen, the dust, the solarization, scratch with the finger grasp and so on.

外因如制剂、妆品、动物毒素、鱼虾、花粉、尘埃、日晒、搔抓等。