Tianchang TG Turbine Ventilation Co., Ltd is the major manufacturer who contains designing, producing, and selling processions of the roof turbine ventilators. Our company was established in 1995 and it is located in NO.205 National highway between the cities of Nanjing and Yangzhou, in the Innovation Center of Anhui Province in China, and the transportation is very convenient. We have a designing team with profound skills and experience in which all the skilled workers are professionally trained and proficiency in operating and they have high quality consciousness. Our company has always been carrying out its quality and management system of the International ISO 9000. We have always been taking the quality as our life, credit as precondition and service as basic. Our products of TG-880, TG-600, TG-500 and TG-300 turbine ventilators have been appointed as the specialized products by many large enterprises and designing institutes. TG turbine ventilators are the famous products in the same line, and we are the only company who has self-management import and export right in the line of producing the roof turbine ventilators in China. Our products have been selling to all over the world, and we have exported to many countries in large quantities, such as France, America, India, Angola, South Africa, Iraq, Russia and so on. We will provide the best quality, the best service and the most favorable price to all clients. Buildings choose ventilation, ventilation chooses Tongguan! The Raw Material of TG Turbine Ventilators: â… ) TG Turbine Ventilators are made of the stainless steel, galvanized sheet and aluminium. â…¡) We use the advanced UBC bearings from the USA. The Operating Theory of TG Turbine Ventilators: The undulating vanes lead to smooth rotation by light wind. The bearings at lower and upper position make smooth turns. The motility created by the rotation of the vanes brings the hot air, smoke and wet air up to the roof and exhausts them out.