Guangdong Zhanshen Heli Electrical Appliances Co. Ltd. , established in 2003 , has two factories : one is in Huizhou city , Guangdong ,China , making booster pump and RO system , second is in Foshan city, Guangdong , China , making ACDC fan . EFLOW is our international brand , which is registered in many markets including China , India , Russia and Turkey etc. .We already obtained many patents in USA,China , India , Korea and other countries. Our booster pump has the widest product range in the industry , covering from domestic and commercial usage from 50gpd to 1600gpd , we can offer 24V DC ; 48V DC ; 220V AC pump . Our booster pump has 9 series : N - mini pump ; M - small 4-chamber pump ; S - middle size pump ; L - regular pump ; X - 4 chamber pump ; H - highflow pump ( 6 chamber ) ; Mechanical pump (no need electric power ) ; AC pump ; Two head pump etc. Basic on our pumps , we've developed few models of RO systems : table top RO system ; wall mounted RO system ; mechanical RO system which operated by hands and no need electric power . In the recent years , we've step into energy saving products - ACDC fan , product range covered PTW fan ; exhausted fan ; industry fan etc. , all fans supported by 12V DC power from 220V AC after adapter ; or power bank ; or solar power , with or without battery is optional .  our manufacturing base is in Foshan city, Guangdong China  where is famous by home appliances manufacture in the world . energy saving products is trend of the future . You are welcomed to develop our EFLOW brand , and OEM is acceptable too , Tailor-made business is also warmly welcomed .