雨伞用布主要有三种：涤纶、PG布、尼龙? ?texnology?FCSA雨伞布防水剂，产物性质比较稳定，初始防水效果好，用量少? A large amount of production practice has proved that on chemical fiber fabrics such as polyester and nylon, the dosage of 10-20g/L can show excellent water-repellent effect and washability (20g/l has good washability); arrange samples: Call or add WeChat, welcome to consult ?</p
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