The greenyang environment is part of the guangzhou greenyang environmental technology company ltd., which was established in 2005 with a registered funding of 8 million and is a high-technology enterprise that combines research and development, production, marketing and construction, with a focus on indoor air pollution detection and management services. Through many years of development, a series of highly skilled and high-quality green-yang air purification products have been developed jointly with universities. In recent years, there has been a preference for the purchase of condensed houses, and the need for rapid occupancy is the need for formaldehyde removal. Access to the internet is easy, and the dangers of formaldehyde are understood through major media and television. As the standard of living improves, the prices of dealdehyde products are moderate and can be accommodated and accepted in a few days. 1. Construction equipment 721 spectrophotometers, gc112a meteorological c...