久久99热这里只有精品首页,成人精品中文字幕在线视频,国产精品久999,久久久久久久久午夜精品福利,国产夫妻自拍小视频在线观看,欧美激情一级大片,成人免费资源一区二区,日韩av电影在线观看,亚洲av日韩av鸥美

       

Equipment performance:
CNC square welding machine: This equipment adopts double welding torch welding, and the welding machine adopts Japanese Panasonic welding machine. This equipment is two welding seams welded together, the welding seam is uniform, and there is no welding slag. This equipment can weld square, round and oval The product.