丁香国产中文在线|国产精品久久久直播观看|国产亚洲AV无码成人片|级品的美女A片|亚洲色图 日韩无码|欧美日韩卡一卡二在线播放视频|免费毛片A片视频|操一起操看三级片|中文成人人妻电影|亚洲精品无码久久

The machine adopts hydraulic transmission, two oil cylinders respectively push the coating out and mandrel up and down. The mandrel beam sliding adopts the structure of three columns and three beams, the hydraulic circuit is simple and reasonable, and the electronic control system operates reliably, thus ensuring the balanced operation of the equipment.