Zhongshan CHANNEL Electrical Technology Co., Ltd.,it's Zhangshan city in the South of China.referred to as "CHANNEL Technology", is a product development, production, manufacturing, sales and service of air conditioning and fresh air system accessories manufacturers. The main series of CHANNEL Technology's wind flow products include: plastic cross flow impeller for air conditioning, plastic axial wind impeller and plastic centrifugal impeller, and All-heat exchange cores widely used in fresh air exchange systems