The registration address of the eastern bluewood purification technology company is located in room 5098, no. 474 of the city of dongqing, mayor of guangdong province, and is the market supervision authority of dongqing city, represented by a legal person, and includes the development of air purification equipment; the design and construction of clean-up engineering projects; the design, installation and commissioning of clean-house engineering systems and equipment; the installation of electrical and mechanical equipment; the sale of refrigeration equipment, clean-up equipment, electrical and mechanical equipment and their accessories, environmental protection materials, static electrical products, sterile laboratory equipment, purification equipment and purification materials; and the import and export of goods or technology (except for goods and technologies that are prohibited by the state or involve administrative approval). (projects subject to legal approval are not allowed t...