BEIJING YAISU TECH CO., LTD BIGGEST FACTROY 4D|5D|6D CINEMAIN CHINA WE ARE NO 1!
BEIJING YAISU TECH CO., LTD begin in 2000 year, is the first factory for manufacture 4D|5D|6D theater equipment in China, now is the biggest and most professional 4D|5D|6D theater equipment facto
