1. A chemical substance or compound applied to a surface to modify its properties, such as improving adhesion, corrosion resistance, appearance, or durability
The manufacturer used a surface treatment agent to enhance the paint adhesion on the metal substrate.
O fabricante usou um agente de tratamento de superfície para melhorar a adesão da tinta ao substrato metálico.
2. Any material used in industrial or manufacturing processes to prepare surfaces before coating, bonding, or further processing
A silane-based surface treatment agent was applied to improve water resistance.
Um agente de tratamento de superfície à base de silano foi aplicado para melhorar a resistência à água.