激情内射亚洲一区二区三区,岳乱妇乱第24集,成人AAA片一区国产精品,国产乱国产乱老熟300部视频

EN

Application

Location:Home >Application

28 years of professional customized gear transmission manufacturers, high-speed teeth, bevel gears for 10 consecutive years into the domestic gear industry top three, has been awarded 45 national invention and utility model patents

Double-sided helical gears with high precision for the ship lift

2023-03-15 Source:Original Views:1733
　　The company's self-developed double-sided helical gear with high precision has replaced imported products and been successfully applied in the Three Gorges Dam water conservancy project.

Tel

023-47852899 / 023-68185200

Top