Qingdao Public Co., Ltd. is specialized in environmental water slurry boiler boiler environmental R & D, design, manufacture, sale, installation, technical advice and marketing as the core of the enterprise. Since its inception, public companies adhere to the sea starting point, systematic, industrial development strategy to own the coal boiler series of intellectual property as a core technology system, and professional commitment to the development of coal-water slurry boiler industry, environmental protection and green energy new technology research and development and application promotion. 

 From 1999 until early 2009, after arduous theoretical exploration and engineering practice, the sea all the brands have won the CWS burners, CWS small industrial boilers, heat-conducting oil furnace burning coal water slurry, coal slurry waste incineration furnace, sludge coal boiler, coal-water slurry and sludge production process, the combustion of municipal sludge treatment method, the new coal-water slurry burner, coal boiler fuel supply unit, coal-water slurry fuel and asphalt concrete mixer Vertical industrial boilers etc. CWS a national patent. The series of intellectual property and other proprietary series of the sea all the technology to build the sea all the company's strong technology core competitiveness. 

 Since 2001, sea green boiler CWS public companies in the country initially sold more than 600, more than 65% market share, building a number of model (model) the user project, has extensive experience in product manufacturing and engineering services, by the business users strongly agree and support system to promote environmental protection of China's coal-water slurry boiler industry market application system. Its products and technology contributed significantly to the country regions, especially in coastal areas of environmental protection boiler coal slurry application process, also contributed to the development of local industry, CWS, CWS for the sea all to promote the use of national green boiler laid a solid foundation for the market. 

 In 2006, the sea all the products and technologies sold in China Taiwan started to run, and out of the country. 

 September 2006, the National Development and Reform Commission experts, led by six major ministries, leading to the sea when the public appreciation of investigation and study: the sea all the cause of China's coal resources and environmental protection, energy saving and emission reduction has made outstanding contributions. 

 August 2007, the CPPCC National Committee Vice-Chairman, Chairman of the National Federation of Sea cordial meeting with Huang Mengfu Jianggui Li, chairman of the public, the highly praised the public for the sea environment protection and energy business in China played an active role. Vice Chairman Xie Boyang China Federation of Industry, the National Federation Minister of Economic Affairs and the National Ouyang Xiaoming, secretary of the Ministry of Commerce led the investigation Yuan Ching Hai all again when the boiler of the Qingdao Environmental Protection Co., Ltd. to respond to national public call on the cause of environment protection and energy spoke highly of the outstanding achievements. Dragon China Federation of Industry Vice Chairman Zhang, Chu Hai equality are very concerned about the development of the public, indicating that the sea should be the country promoting public environmental protection, energy saving, emission reduction technologies play a greater role in promoting. 

 September 2009, the sea all the successful restructuring, "Public Boiler Co., Ltd. Qingdao" formally changed its name to "all the Qingdao Environmental Protection Boiler Co., Ltd.", which is the sea all the annals of the development of another new milestone.