eco-friendly PSM knife,starch Material,Sturdy and Durable.Heat tolerant ... Materials:PSM(Polystarch Material) which derives from corn starch Features:Eco-friendly, Refrigerable, Decomposable and non-GMO vegetable starch,Sturdy and ... CTNS/20FCL ;3415CTNS/40FCL5.G.W: 5.9 KG/CTN eco-friendly PSM Knife