120-150T/M Full Automatic Anodizing Production Line for Aluminum Stair Handrails Overview This full-automatic aluminum anodizing line is professionally customized for architectural aluminum stair railings, handrails and profile accessories. It adopts standard sulfuric acid anodizing technology to form uniform, dense and weather-resistant oxide films. The line supports decorative and protective anodizing with adjustable film thickness, stable color consistency and excellent