熟妇人妻无码xxx视频,久热这里只有精品视频6,中文字幕久久精品一区二区三区,乱子伦一区二区三区

· Low cost: the cost of rolling mould is far lower than other moulds; the cost of product raw material (PE) is low, easy to process and economical.

· Flexible design: various inserts can be placed to reduce the cost of reprocessing.

· Double wall structure: uniform thickness, no water leakage, impact resistance, corrosion resistance, wire contact safety.

· Color diversity: no need to print, economic and environmental protection, safety and health.

· Become difficult for easy: products hollow seamless, one-piece forming, can process large, super large shape complex products.

· It can be used for special purposes: by adjusting the arm thickness and filling with foaming materials, it can be used for heat preservation, sound insulation and other purposes.