introduction to Phenol Resins
Phenol resins are made from phenol and formaldehyde and mostly contain such fillers as wood meal, asbestos, craft paper and cloth. Molding will be a lot easier when being added with wood meal, […]
introduction to Urea Resins
Urea resin can be produced through the reaction between urea ( ammonia) and formalin, catalyzed by acid or base. It is formed through compression molding adopting hard chrome plating model, […]