E-ZONG founded in Guangzhou, Guangdong province in 1996 named "SANHE", has been developing for more than 26 years with branches and factories in Foshan, Dongguan, Zhongshan and Taishan. E-ZONG is the most professional and perfect in the clean industry in south China.

The company integrates R & D, production and sales of clean room aluminum profiles, air-conditioning unit frame aluminum profiles, air diffuser aluminum profiles and clean room doors, medical automatic doors, swing doors, air diffuser and other aluminum products. Products are widely used in medical and health, bio-pharmaceutical, food and beverage, cosmetics, machinery and electronics industries. The production of its products introduces a full set of CNC machining equipment, and its quality is in a leading position in the same industry. Now E-ZONG(Yizhong) is occupying plant area of more than 30,000 square meters, having more than 300 employees.