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Type II（Self cure/cold cure）Denture Base Resin: the Powder part of this product is consist of polymethyl methacrylate (PMMA) resin, pigments and the initiator benzoyl peroxide (BPO); The liquid part is composed of methyl methacrylate monomer (MMA) , polymerization inhibitor 2,6-di-tert-butyl-p-cresol (BHT) , accelerator N, n-dihydroxyethyl-p-methylamine (DHT) , UV-327, the antioxidant 1076 and the antioxidant 168.