Category: Surface finishing

2026-10-26

Screen Printing and Laser Marking on Sheet Metal Parts: Process Selection and Quality Control

Marking is the “interface” between a sheet metal product and its user. Button labels on an equipment panel, warning symbols on a cabinet, and model and serial numbers on a nameplate all depend on a surface-marking process. Good marking makes a product look professional and reliable; poor marking damages appearance at best and causes customer […]

2026-10-13

Conductive Conversion Coating (Chromate) and Grounding Surface Treatment: A Key Process for Cabinet EMI Shielding

In telecommunications cabinets, industrial control enclosures, and new-energy equipment, sheet metal parts serve not only a structural function but also electromagnetic shielding and grounding continuity. However, aluminum naturally forms an oxide film in air, and after powder coating it becomes completely non-conductive. If the surface is not treated correctly, cabinet shielding fails and grounding resistance […]