We Manufacture Phenolic Resin For Refractory Material,Foundry(Coated Sand),Brake Pad And Lining PFN4301series: ... it’s pure phenol and formaldehyde resin,use for producing refractory material(magnesium carbon brick,aluminum magnesium carbon brick,dry vibration ... residual carbon quantity,which can improve corrosion-resistant capability of refractory product under high temperatute. Don’t need to add ...