Are there any materials on indoor environment purification?

Yes, there are. Japan and the United States are doing very well at the moment; we are **still in the initial stage. The harmful gases indoors are mainly benzene, toluene derivatives, and TVOC; currently, there are such companies in Shanghai, Guangzhou, and Chengdu. As for the specific products, there are nano-photocatalysts, nano-enzymes for removing formaldehyde, benzene and ammonia removers, agents for breaking down odors from construction work, TVOC removers, and so on. I used to work at Poca in the United States; you can look up information about Poca online – this company is quite famous in this field. As for the processing fee, it’s around 1,000 to 2,000 or so. However, you can choose higher-quality materials during the renovation process, which will help reduce the level of pollutants. Additionally, wait half a year after the renovation before moving in, so that no further treatment will be necessary. Otherwise, some pollutants can be carcinogenic. If you’re not afraid of the hassle, you can consider buying the medication to deal with it yourself; the cost is around 500. Be careful though not to damage your furniture, especially leather items, as those medications are colored. As for the medicine, you can check if it’s available at some large supermarkets. If not, you can consider having them mail it to you.