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

CRRC Chengdu Sandblasting Room

Rail transit 50m sandblasting room
The project is equipped with double-cylinder double-gun sandblasting system, scraper recovery system, dust removal system and lighting system, etc.