1.double-component special polyurethane foam material. 2.easy to operate. Duration is short. Product specifications:White (part A) 200 kgBlack (part B) 230 kgproduct quality indexPolyurethane quality indexitem Weight(g/piece)White(part A) 200±5,Black(part B) 230±5Foaming time (s, ,20°C)40±10Foaming rate(20°C)5~7