Specification:
1. Seats & Backs: use thickness of 1.3mm Cold-rolled steel plate, through stamping and welding, after antirust dealing & electronic polishing, then bear static coating .
2. Arm & leg: use thickness of 1.1mm Cold-rolled steel plate, through stamping and welding, after antirust dealing & electronic polishing, then bear chrome plated .
3. Crossbeam: use thickness of 1.5mm, size of 40*80mm steel tube,through stamping and welding, after Antirust dealing & electronic polishing, then bear static coating .
