9热视频这里只有精品,少妇一级黄色婬片免费看,无码人妻一级毛片免费换脸,欧美一级婬片A片免费有限公司,肥婆BBBBBBBBB高清视频

    The storage and conveying system of polyol / isocyanate is used for storing polyol / isocyanate material. Unloading from tanker, feeding, temperature control and conveying all can be done automatically. It greatly reduces the labor intensity and improves the production efficiency. At the same time, it can reduce the waste of raw materials and the cost of storage, and solve environmental problems. It has high economic and social benefits.

 Feeding Device

Unloading Device