久久久黄色录像-亚洲精品乱码97久久久-亚州av乱码久久精品蜜桃-国产一区二区大片 久久99亚洲热视_狠狠狠干_中文字幕在线免费观看电影_精品国产第一区二区三区

The steel wire is two spiral wires of brass wire, which are installed on the shaft of the wire arranging device. When working, the original wire is evenly distributed in a certain way, covered as much as possible on the winding drum, and the original wire barrel is stored or baked. After drying, it can be smoothly retired, it is a key component that directly affects the quality of the original wire.