How to buy a large core board
A look at whether it is a regular manufacturer's product. To check the manufacturer's trademark, production address, anti-counterfeiting mark, etc. Second, look at the formaldehyde emission in the product test report is less than or equal to 1.5 mg per liter. Generally, the regular manufacturers produce test reports, and the detection value of formaldehyde should be as low as possible. Third, look at the appearance quality of the large core board. Look at whether the surface of the large core board is flat, whether there is warpage or deformation, whether there is blistering or dent; whether the blockboard can be cut open at the scene or during construction to see if the inner core strip is even and tidy, the smaller the gap, the better; The width of the core should not exceed 2.5 times the thickness, otherwise it will be easily deformed; the core strip should be free from decay, breakage, wormholes, thrift and so on. Whether the core strips are even and tidy, the smaller the gap, the better, the core strip has no decay, breakage, wormholes, thrift, etc. Under normal circumstances, the quality of the large core board with good appearance quality is better. Fourth, see if there is any smell. If the large core board emits a fragrant wood smell, it means that the amount of formaldehyde released is small; if the smell is pungent, it means that the amount of formaldehyde released is more, or do not buy. Fifth, add a word “must comply with national standards†on the purchase contract or invoice. At the same time, it is best to leave a sample in the construction. Once the project is finished, it is found that the indoor environmental pollution caused by the quality of the large core board can be used as The basis for judging responsibility. Because according to national standards, from July 1, 2002, large core boards that do not meet national standards are not allowed to be sold in the market. Led Area Light,200W Led Area Light,Led High Area Light,Dlc Area Lights Fuonce-Lighting , https://www.szfuoncelighting.com