a, shelf main material used in all high-quality steel, wall thickness of 1.2mm or more, above the main stand pipe wall thickness of 1.5mm. High frequency welded steel pipes, good mechanical properties, surface roughness. Lesson bucket bucket using a forming punch, smooth seamless, good safety performance. b, desktop board with 18mm fire board veneer, after forming boards, fire boards with wear, heat, acid and alkali resistance, burning smoke, impact resistance and other properties, and colorful, fancy vivid. c, back, seat plate surface using a multi-layer veneer curved plate floor, surface mount fire board, by hot pressing. It features good gluing properties, high strength, durable, smooth surface, Wen Li vivid, beautiful color, thickness 12 ~ 14mm. Another may be a one-time molding PVC, hollow plastic chairs and other surfaces