Shandong Greider Group Co., Ltd. is a national large-scale enterprise specializing in the production of central air conditioning and FRP composite products in China. The company has a registered capital of 654.38 billion yuan, an effective production area of 450,000 square meters and total assets of 420 million yuan. It is a pillar enterprise of central air-conditioned city (Dezhou). The company has the national first-class mechanical and electrical equipment installation qualification and the second-class clean air conditioning installation qualification issued by the Ministry of Construction, and the trademark "Greider" has been rated as a well-known trademark in China. Now it has more than 600 employees/kloc-0, including more than 300 senior and intermediate technicians. It is a modern large-scale enterprise group integrating R&D, central air conditioning, ventilation and FRP product design, production, testing, sales, installation and maintenance.