We are one of the leading professional manufacturers and suppliers in hvacr fields. Based in hongkong, dingtai holdings invested six companies to produce and supply various hvacr products during past 8 years. ** our mission is: one-stop supply, satisfying customers. Dingtai holdings is global company committed to experienced global staffs, world class quality, fast on time delivery, advanced modern production line, excellent service and competitive price. Our management team includes experienced engineers, researchers and workers who understand well the needs of the mechanical systems and marketing of the hvacr fields. ** we always devote ourselves to the development of new products and offer top service to our customers and to create new value. ** dingtai holdings offers the following quality products: copper tube, copper fitting, aluminum tube, plastic pipe and fitting, heat insulation (rubber insulation and building insulation), tape, ventilation systems and parts (flexible duct, ceiling diffuser and air grille), refrigeration parts (fan, motor, heat exchanger), refrigerant gas, thermostat, nail, hardware tool the products we supplied are under iso 9000, iso 14000 management systems and with ce, ul, ccc, tuv, upc, nsf, whi, kite mark approval. In order to have sufficient variation for our customer, we set up our mainland office in qingdao to collecting and organize all goods we produced. ** our commitment is to deliver superior quality products and excellent service. At dingtai holdings, we will work closely with our customers to meet their needs, build and nourish long lasting business relationships.