久久精品国产字幕高潮,国产精品国产三级国产AV剧情,成人欧美一区二区三区在线观看,亚洲.国产.欧美一区二区三区

Into shanjiang

Products

Product classification

Recommended product

EVA sole material

Sneakers

The material used in EVA sports sole is ethylene / vinyl acetate copolymer, which is prepared by the copolymerization of ethylene (E) and vinyl acetate (VA), referred to as EVA. Compared with polyethylene, EVA introduces vinyl acetate monomer into the molecular chain, which reduces the high crystallinity and improves the flexibility, impact resistance, miscibility of fillers and thermal sealing performance. EVA sole has good resilience and tension resistance, high toughness, good shockproof and cushioning performance.

Contact us

Description

Leave a message

If you have any comments or questions, please feel free to contact us