深夜福利无码极品_最新国模裸体精品视频_精品粉嫩虎白女在线观看_亚洲av无码资源网偷拍

So far, the most common technologies have been used are open mill mixing and internal mixer mixing, which are called non-continuous mixing. Based on the advantages of both open mill and internal mixer, we have designed the “screw mixing machine” in continuous mixing method and of high efficiency with the strong points as follow.