office chair, conference chair,mesh chair Mesh fabric upholstery, tilting mechanism, 320mm chrome base & nylon castor 5273-B hot sales office chair, executive mesh chair: 1)Mesh fabric upholstery, 2)tilting mechanism,3)320mm chrome base & nylon castor 4)One 40'HQ can be load 525 pcs, packing size: 62x35x60cm/pc5)Warranty period: 3 years 5273-B hot sales office chair