一区二区三区av这些免费观看-国内自拍成人福利视频-国产91精品清纯白嫩-在线女同免费观看网站

Symbol [wind power] pitch pinion industrialization
     Gear machinery products is an important foundation parts. Transfer gear is a major form of machine power and movement. Compared with the belt, friction, hydraulic mechanical transmission, with power range, high transmission efficiency, transmission than accurate: long life, safe and reliable, so it has become indispensable to many machinery transmission parts. Gear design and manufacturing level will directly affect the performance and quality of mechanical products. Because of its prominent position in industrial development, so that the gear is recognized as a symbol of industrialization.

Links:
TV http://www.jyzdl.com/products-detail.asp?cpid=347 wind ring gear
Non-standard gear custom http://www.jyzdl.com/products-detail.asp?cpid=466