色播婷婷电影综合社区,AV女优不卡亚洲在线,99999AV,日韩人妻中文字幕视频,国产拍自偷,91人人妻,超碰在线81,免费福利视频一区,九草青草原在线看

Beijing Metwork Petroleum Technology Co., Ltd. is a trade, machinery processing, manufacturing in one integrated company.  Relying on Zhongyuan Special Steel Machinery Manufacturing Co., Ltd. as the production and manufacturing base, the company has a number of sets of domestic advanced smelting and forging production and processing equipment, with strong mechanical processing and professional technical capabilities, to ensure product quality has laid a solid foundation, and a number of domestic large enterprises to establish a long-term cooperative relationship.  

The main products of the company are: all kinds of fine steel forgings, shaft forging and processing (metallurgical roll/fan spindle and flange/corrugated roller/motor shaft/module/cast tube mold/ship shaft), large shaped forgings for specialty.  Oil drilling tools (no magnetic drilling tools/auger collars/integral weighted drill pipe/centralizer/quad-hexagonal drill pipe/ordinary drill pipe/oil casing of various specifications, etc.), processing and manufacturing of various deep holes (the specifications are: internal diameter of 8mm-800mm, length to 16m).  The products are widely used in mining machinery, chemical industry, petroleum, metallurgy, shipbuilding and other fields. 

The company's production base production and management of products in the international quality system has been ISO9001:2000  

Quality management system certification, API-7-1, API-5DP and other qualification certification, for products to expand the market, expand the market share at home and abroad to provide a strong guarantee;  It has laid a solid foundation for ensuring product quality.  

"Quality first, integrity-based, customer first" is our principle, customer satisfaction is our eternal pursuit.  In the current changing market tide, we will be honest and trustworthy attitude and the spirit of innovation, to provide domestic and foreign customers with excellent products and quality service.  Willing to work with you hand in hand and seek common development!