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1.Station Foot:35*80*1.5mm high quality carbon steel;2.Back:1.5mm high quality moulded colded-rolled steel;
3.Writing board:10mm active Fire-resistant Multi-layer Plywood;
4.Seat organization:3.5mm moulded steel;
5.Seat board:15mm high quality fire-resistant multilayer plywood;
6.Beam:40*80*2.0mm square tube
7.Recovery:Spring returning system



