Dyne value test ＞50mN/m                             Surface Morphology (50× Magnification)

Laser surface roughening treatment is applied to battery cell housings before UV coating spraying. It removes surface grease, dust and oxide layers while forming uniform micro rough surfaces. Precise laser roughening activates the substrate surface and greatly improves adhesion between UV paint and cell housing, avoiding coating peeling, flaking and sagging. This process causes no damage to base cell material and delivers highly consistent surface treatment, meeting mass production yield standards as well as insulation protection, weather resistance and durability requirements. Replacing traditional mechanical grinding and chemical wiping methods, it features clean, eco-friendly and highly controllable performance, perfectly matching mass production on automatic cell coating lines.