The most frequent surface treatment is powder or liquid coating. Powder coating is more ecological than liquid, more economic because it can be recuperated and reused, easy application: one layer give good adherence and resistance. Electrostatic or aerographic liquid paint dimminish time application, consumption, air particles and waste.

MullerNewpac manufactures paint booths that can be either automatic or manual, for continuous or static application, with controlled atmosphere, liquid or dry aspiration, made with synthetic material, stainless steel or lacquered steel.