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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.

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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.

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日本护士╳╳╳hd少妇,日韩网红少妇无码视频香港,久久综合给合久久狠狠狠974,自拍 亚洲 欧美 卡通 另类

日本护士╳╳╳hd少妇,日韩网红少妇无码视频香港,久久综合给合久久狠狠狠974,自拍亚洲欧美卡通另类