July latest wholesale price of galvanized sheet duct - galvanized duct board factory direct. Sales Hotline: 13573487358 Texas Hao Feng ventilation and air conditioning equipment products factory specializing in the production of all kinds of central air-conditioning parts and equipment. The company's high-end technology, excellent production staff, good service, streamlined quality production has been active throughout the central air-conditioning market. Company to design, manufacture, marketing, sale as a whole, its product quality in the industry has been overwhelming majority of customers. Galvanized sheet ventilation ducts is air conditioning, ventilation exhaust system, the most traditional and most extensive product. Steel duct wall is smooth, low resistance, air tightness, high compressive strength. Convenient galvanized sheet duct-site, and civil works closely, it can fit very complex ventilation projects. Its cost is lower than that of stainless steel pipe wind, use very extensive.