Established in 1894 as a professional manufacturer of heating, ventilating & air- conditioning units and refrigeration equipment, Dunham-Bush is today a multinational group with a hundred-year history and a global reputation. Pioneering the development of rotary screw compressor technology for air-conditioning systems, they enjoy a total of 48 world patents covering liquid ejection refrigeration, gaseous ejection refrigeration, step-less plunger regulation technique and Hermetic screw technique, ranking at the top of screw compressor technology worldwide. 1995 saw the birth of Dunham-Bush Yantai Co Ltd, a joint-venture with Yantai Moon (Group) Co Ltd. Dunham-Bush Yantai Co Ltd enjoys a modern and well-equipped plant . Among its advanced equipment are British HOLROYD‘s CNC rotor grinder, German LEITZ’s 3D coordinate measuring machine, large-scale screw rotor miller, hi-precision external grinder, German EISENMANN’s electrostatic powder coating line, American TRIDAN’s full-set coil line, Japanese AMADA’s CNC punch press, as well as test benches of 600, 1,100 and 2,500 tons of refrigeration using American Dunham-Bush technology. In addition, it is advantaged in talents reservation and qualification. All its engineers and workers in key posts have receive long-term training at Dunham-Bush headquarters in America and Malaysia. And trainings for new employees on professional skills provided to all special operators, who commence their operation only after passing a rigid strict evaluation. On the first try in less than two years after establishment, Dunham-Bush Yantai Co Ltd. secured, successful validation of ISO9002 Quality Management System with British Lloyd’s Register of Shipping. In 2000, Dunham-Bush Yantai Co., Ltd. passed the strict ARI (Air-conditioning and Refrigeration Institute) validation , one of the most authoritative institutions worldwide in the refrigeration sector, and was granted the ARI certificate. Dunham-Bush Yantai Co Ltd. enjoys advanced management mode, strict quality control system and perfect assurance system for after-sales service. “Dunham-Bush is known as the choice of experts”. This is the best recognition and clinching honor by technical authorities across the same industry. Dunham-Bush’s products have won the trust and reliance of an infinitude of customers, and Dunham-Bush has thus secured a healthy and steady development based on the strong backup of its huge customer group. Since starting production in 1995, Dunham-Bush has made continuous effort to introduce and develop new products, as both its output and sales increased rapidly. It has now set up branches in more than thirty large cities across China, such as Shanghai, Beijing, Guangzhou, Ji’nan, Wuhan, Xiamen, Shenyang, Xi’an, Chengdu, Nanjing, Zhengzhou and Hefei, with its products selling well throughout the world. With rapid development of Dunham-Bush in China and the continuous expansion of the enterprise, its previous two plant shops can no longer meet its development demand. The Board of Directors of Dunham-Bush then came to a decision based on this situation to expand its investment in China by constructing its new plant of up to 100,000m2 in Laishan Economic Development Zone of Yantai. An R&D center will also be set up. Further efforts will be made to perfect the special technology of Hermetic screw compressors from Dunham-Bush, and to develop new products to meet the requirements of central air-conditioning sector.