久久影院午夜理论片无码,在线看片免费人成视频影院看,国产成人精品无码一区二区九色,av无码久久久久不卡网站毛片

Anhui mining machinery and electrical equipment company is the national coal machinery equipment manufacturing backbone enterprise. Established in 1958, the predecessor was the huaibei mining bureau machinery plant, which was built and developed by coal, and has been expanded, reorganized, restructured and newly built. Now it is part of anhui huaihai industrial development group. In 2016, China ranked 14th in the top 50 coal machine manufacturing industry, which became the leading enterprise of coal machine manufacturing in huaibei region. For many years, anhui mine machine has been sticking to the strategy of science and technology. Successively with the Beijing MeiKe institute, shenyang institute, China mine, anshan strength, tianma technology, rapid, and a number of research institutes in company dati and high-tech enterprise strategic cooperative partnership. It has jointly developed new products such as underground portable rescue capsule, monorail crane, electro-hydraulic support hydraulic support, EBZ230 driving machine, etc. And independently developed the underground advance support device, equipment train and so on.