Use natural sulfitesChemical wood pulporCotton pulpAnd approved by thebeating,sizingWithout filling, there is no fillingLong mesh paper machineonManufacture paper with pulpAnd into. Use the base paper with a swelling agentZinc chlorideDip solution or cuprammonium solution), makecelluloseSwelling gel, and then on the adhesive mechanism for bonding layer upon layer, and then throughagingMature, water desalination, dry plastic, made of vulcanized fiber. Add red or gray. forMechanical and electrical,textileAnd other industries make all kinds of toolsgasket,Insulation materialsAnd otherpartsThe use of.

       Vulcanized fiber is made ofcelluloseAnd its derivatives, is to use of cellulose with a severe swelling and gel properties of the metal salt - for zinc chloride solutionTreating agentThe modified processing paper, also known as hardening paper, is made from the treatment of the steel base paper, while cellulose and its derivatives are chemical products, and the flake made from the chemical products should be pressedplasticRefer to chapter 39. Refer to the articles of this chapter. Non-foam plastic sheets, sheets, films, foils and flat strips shall be referred to heading 3920. Refer to the sub-heading of this article and refer to code 39207900 by specific name.