日韩专区欧美精品_中文字幕成线人熟女_这里只有精品在线伦理三区_中文精品 无码视频

CTB series magnetism selected equipment

The equipment is main used in iron selected plant , the coefficient of ratio magnetism have to more than3000×10-6cm2/g., the equipment have the wet type and dry type, together require the iron powder in 0.5-6mm,and the wet sizes have the size S/N/B.