Chrome Plating part: The coating should be bright and smooth, gleaming, coating can not blister, can not rust, do not reveal yellow, not scratched.
Titanium Plating Part: Color can not pan white, especially bogey white, other chrome.
Spray part: Coating film without shedding, no pimple, no wrinkle, no rust point, smooth and delicate, moist heavy.
2. Metal pipe and riveted folding parts
Metal tube section: No overlap, cracks, open welding, concave pits, round bends should not have wrinkles, the arc should be sleek and smooth; Welding department can not have virtual welding, leakage welding, welding wear, blowhole, residual wire head, Burr, and must be polished rounded: the surface of the tube wall should be smooth and clean, feel smooth.
Riveting part: should be firmly not loose, rivet round head and surrounding should be smooth without hitting the mark or Burr.
Folding part: Should open relaxed freely, but tight but loose just right. Folding bed, chair, stool, sofa, table, etc. open, four feet should be on the same level.