As of march 2021, there were over 1,500 formaldehyde management services throughout the country. Main business acquisition projects: formaldehyde union, air governance union; main business acquisition: formaldehyde, air governance, new house formaldehyde, car formaldehyde, school formaldehyde, metro formaldehyde, theatre formaldehyde union; leaf conservation has a class 1 qualification for indoor fit-out pollution management issued by the china committee for indoor decoration in the south china region, with the honour of "quality aaa " in china's environmental quality quality quality quality quality quality quality quality quality quality quality quality quality quality quality quality quality quality management sector. To date, the company has 13 inventions and practical patents in the field of air purification. In 2017, the leaf environmental protection, in collaboration with the institute of materials and energy of the south china university of agriculture and the guangdong unive...