永久免费av网站_野花香视频在线观看免费高清版_日本XXwwWXXXX网站_四虎国产精品免费久久久_无遮挡亲胸捏胸免费视频_一级日韩片

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.