国产日本卡二卡三卡四卡,免费国产理论视频,三级亚洲中文字幕,日韩av片高清在线观看

The use of poly blank packaging formaldehyde: all kinds of artificial board, particle board, fiberboard, plywood, etc., due to the use of adhesive, it can contain formaldehyde - poly blank packaging formaldehyde.The production of new furniture, wall, ground decoration laying, all need to use adhesive.Wherever adhesives are used heavily, there will always be formaldehyde release.In addition, some chemical fiber carpet, paint coating also contains a certain amount of formaldehyde.Formaldehyde - poly blank packaging Formaldehyde can also come from cosmetics.Cosmetics, cleaning agents, pesticides, disinfectants, preservatives, printing ink, paper, textile fibers and other chemical light industry products.

Poly blank packaging formaldehyde has a very wide range of uses, synthetic resins, surfactants, plastics, rubber, leather, paper making, dyes, pharmaceuticals, pesticides, photographic film, explosives, building materials and disinfection, fumigation and anticorrosion process are used in formaldehyde, formaldehyde can be said to be a versatile chemical industry, but the use of anything must have a limit, a standard,Once used beyond the standard and limit, there will be a negative side.