Shandong GRAD Group is situated in Dezhou, Shandong. It is a large modern enterprise with the research & development, design, production, sales, installation and maintenance for central air conditioning products, composite material products and solar energy products. Is is named the pillar enterprise by China Refrigeration and Air Conditioning Industry Association(CRAA) and is one of the leading enterprises in central air conditioning and composite material industry. GRAD Group has established 15 subsidiaries: Sales Engineering Company, Chiller Company, Air-conditioning Company, Civil Air Defense Company,Winding Company,Composite Material Technology Company, SMC Company, Wind Power Company,Thermoplastic Company,Cooling Tower Company,Chemical Defense Company, International Trade Engineering Company,New Energy Company,New Material Company,Air Conditioner Accessories Company. It has already passed ISO 9001 quality management system certification, ISO 14001 environmental management system certification and OHSAS 18001 occupational health safety management system certification.