亚洲一级影片_99re热国产_国产日韩视频在线观看_免费福利在线观看_av在线free_猫咪永久入口网址

Hudong Shipbuilding Sand Blasting Room

In 2001, Guangcheng designed and manufactured the largest sandblasting room project in China, which is also the first modern coating room in China. The double-cylinder four-gun sandblasting machine developed by Guangcheng was applied for the first time.