Dongguan Zhisheng Purifciation Technology Co.,Ltd. is specialized in manufacturing air purifying equipments and accessorial parts for air-conditioners, with a product range of 3 major series, covering more than 100 types of products. We manufacture our products strictly in accordance with state standards. With the top-graded product quality in the industry. Our clients enjoys great reputation among the customers all over the country. Our products include pass box, air-shower pass box, air shower, clean bench, FFU, clean booth among other purifying equipments, which are specially manufactured for various primary ,medium and high efficiency air filters (pre-filter, medium filter, hepa filter, ulta filter) and clean room in accordance with GB13544-92 and GB/T14295-93. With the application of automatic production lines. Our HEPA filter satisfy various quality standards as shown by the tests of National Center of Quality Supervision and Inspection and Testing for Air Conditioning Equipments. The purifying equipments are in conformity with GB5007-2001 Design Code of Cleaning workshop. Our wide range of air purifying product will surely satisfy different engineering requirements of different purifying grades. We manufacture the aluminum air inlet/outlet ( air diffuser, air grille, air louver), air damper, pressure damper, muffler, bend muffler, sound reducing shutter, static pressure chamber and other accessorial parts for air-conditioners with the excellent materials in accordance with GB50243-2000.Due to the best quality and delicate crafts, our products are widely applied in many large-scale projects and win consistent high praise of our customers.