人妻熟妇乱又伦精品视频,女人与公拘交酡免费网站,另类内射国产在线,曰韩人妻无码一区二区三区综合部

Belt conveyor gear  views on the current situation of China's gear
     Gear is capable of intermeshing toothed mechanical parts, it is used in the mechanical transmission and the whole machinery of extremely broad. Our gear industry consists of three parts: vehicle train gears, industrial gears and gear equipment. Among them, the market share of car column gear 60; industrial gear from the industrial general, special, special gear structure, its market share was 18,12,8; gear equipment market share of 2.
     The current development of China's gear industry, there are still some problems, mainly industry big but not strong, structural contradiction. In the product structure, production of low-end gear can be huge, but the production capacity of high-end gear, and high-end gear in production technology with foreign countries there is still a big gap. Such as automotive transmission automatic transmission and high-speed trains and other core technology controlled by others and a lot of imports.

Links:
Universal gear gear http://www.kjiu5.cn/products-detail.asp?cpid=442
Gear www.kjiu5.cn