91精品国产全国免费观看蜜桃_免费无码肉片在线观看第一次_国产精品顶级一级毛片_精品国精品国产自怕拍久国产

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.