... , strong and smooth, no rag, no welding scar. The anti-electric-state powder painted to the metal was imported from Germany, which ... with the standard of GB/T 4454-1996,anti-UV, anti-ageing,anti-static, anti-crack,anti-electric state,non-toxic,the quality passed all ... and 9mm of diameter, (EU EN1176 and USA ASTM).Anti-sliding,anti-water,children can play safely and happily.6,Screw: All ...