Alloy steel gear, hard tooth surface, large in output torque and durable in use.

齿轮材料为合金钢，硬齿面，输出转矩大，可靠耐用。

youdao

Alloy steel gear, hard tooth surface, large in output torque and durable in use.

齿轮材料为合金钢，硬齿面，输出转矩大，可靠耐用。

youdao