The authoritative certificate is shown in the figure: diatom mud test report:
1, patent technology certificate (there can only be one patent technology of the same kind in China. You can check the patent number on the website, mainly to check whether it is the patented technology of this industry, and some manufacturers cheat consumers with fuzzy numbers or patent application numbers).
2. Zero formaldehyde test report (product performance)
3. formaldehyde adsorption (adsorption and decomposition of harmful substances such as formaldehyde) comparative test report, it is best to be issued by the national testing institutions (this can only be the case in China, and the reports of local testing institutions are even more unreliable).
4. "Air purification standard" is the most effective basis for whether the product can absorb harmful gases such as formaldehyde.
5, the store's authorization certificate (some fake and shoddy products will lie about different purchase channels and pretend to be big brands for sale. Consumers must find a store with an authorization certificate to buy, so as to ensure the quality of products and services)
6. Check the security bar code of the package. Regular manufacturers and their products that meet the requirements of national authoritative standards will be registered in China Article Coding Center. Consumers can log on to the website of China Article Coding Center to make inquiries, so as to avoid being deceived and unscrupulous merchants cheating consumers. Take two sealed glass bottles, one bottle is filled with half a bottle of diatom mud dry powder, the other bottle is empty, then take a long puff of smoke, blow it into the two bottles respectively, and then cover the sealed caps. Ten minutes later, open the lid and smell it in the mouths of two bottles. Bottles filled with diatom mud have almost no smoke smell, while empty bottles have a strong smoke smell.