欧美日韩精品久久久免费观看,日韩精品一区在线观看,97久久久国产精品,中文字幕一区二区电影,日韩激情一区二区三区,欧美日韩一区久久,亚洲aa视频

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.