樱桃视频大全免费高清版观看下载 ,jizz视频在线观看

国产黑色丝袜在线观看片不卡顿,西西4444www大胆无码,老鸭窝视频在线观看,在线无码VA中文字幕无码

Home | Collection | Contact us

The company has eleven sets of spiral welded steel pipe production unit with international modern levels and a set of production line of modern 3-layer PE Anti-corrosion coatings. The outer diameter(OD) of spiral welded pipe from Φ219mm to Φ3600mm, the wall thickness of spiral welded pipe from 6mm to 25mm, steel grade from A25-X80.

Detailed content

Our company had sent senior administrator to Qingdao and Wuxi to participate in the enterprise management training

Our company had sent senior administrators to Qingdao and Wuxi to participate in the enterprise management training, and to visit and study Haier, Tsingtao Beer enterprise management experience. Our company invited domestic senior professors to carry out business management training for senior administrators.

Video