Large area essential oil aroma diffuser machine for big space, industrial scent diffuser for shopping mall, commercial building air port use metal HVAC scent machine with big capacity 1000ml, 5000ml bottle, work with air condition or land standing, coverage 5000 CBM, 7000 cubic meter, with timer mobile App smart control. Big Area Diffuser Machine,Commercial Diffuser Machine,Scent Machine,Scent Diffuser Machine Guangzhou Tang Mei Environmental Protection Technology Co.,Ltd , https://www.tonemy.com