... A levelC ~ D flammable, plus flame retardants into class B flame retargaNoncombustible A levelSmoke toxicityInorganic flame retardant materials, non- ... office machines, steel products, furniture, building and so on.B:Prepainted Product Line: For prepainted product, we have three lines ... protection disk around circumferences.A:Package of steel coil:B:Package of steel sheet:4:Reinforce:5.Our customers ...