12/蜗杆

     Worms

材料选用德国高品质合金结构钢，台湾精密机床加工，经特殊热处理工艺制造。精确度高、使用寿命长、磨损小。

Materials used in Germany high-quality alloy structural steel, Taiwan precision machine tool processing,with a  special heat treatment process manufacturing.High precision, long life, small wear.