在线成本人动漫视频网站,美女胸大禁视频免费网站,国产精品成人99一区无码,亚洲А∨精品天堂在线

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.