In 1912, Andre Citroen Citroen began employing shaped gear as a trademark of our products.
1912年，安德列·雪铁龙开始用人字形齿轮作为雪铁龙公司产品的商标。
Various of wheel chain, drive chain , chain sets, Custom-making special shaped gear, various chain for export.
各种大小链轮、链条、套链、定做异型齿轮、及各种出口链轮。
The device by the human operator launches, such as through the cone-shaped gear reducer drive, direct drive valve stem up and down movement of the valve gate.
本装置由人力操作手轮，通过锥形齿轮等减速传动，直接驱动阀门阀杆上下移动，启闭阀门。
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