... than 14 years ,we are specilalized in esd products ,such as esd chairs , esd trays ,esd boxes , esd magazine racks and so on ,for chairs ... can choose any parts you like to combine them together . ESD chair , Adjustable back Office Chair cos-108 Material: anti-static ... : System resistance:≤109Ω. 103~106Ω (conductive type) or 106~109Ω (ESD type). Parts: high strength die-casting Aluminum alloy five-star ...