What kind of flameproof bellows have what characteristics？Plastic corrugated pipe is a kind of all-plastic single-wall corrugated pipe which is used to wear wire. It is a very light wire and casing. There are three kinds of PE,PP,PA materials in common looking bellows, and the bellows produced by th

PVC products can generally be divided into hard and soft two categories. No plasticizer is added in the processing of hard products, while a large number of plasticizers are added in the processing of soft products. PVC was originally a rigid plastic with a glass transition temperature of 80-85 C. T