粗纱通道为闭式或开式不锈钢管，精密铸造不锈钢压掌，高效聚氨脂假捻器，锭翼不变形，不磨损，易清洗，使用寿命长。

• The roving channel is made of open or closed stainless steel pipe,with a fine-cast stainless steel presser finger and a special processed polyurethane false twister.