双乳涨鼓奶头翘起来揉捏,5555WWW色欧美视频,日韩欧美熟妇久久久久久,加勒比精品无码AV专区,亚瑟在线视频国产二区

Compared with traditional sheet-like high styrene rubber, Powdery High styrene rubber has the characteristics of good dispersion, low volatile content and low odor. It is an environmentally friendly high styrene rubber. Its advantages are as follows:
1. Good fluidity, resistance to caking;
2. It can be better used for polymer modification, such as PVC, MBS, SBS, etc.;
3. It is beneficial to reduce bubbles in processed products, and the product is smoother;
4. Wide range of applications, in addition to traditional fields, especially It is suitable for high-tech fields such as high-speed rail sleepers, rubber floor tiles, automobile tires, sealing strips, brake pads, etc.;