antistatic chair, antistatic chair, conductive fabric chair antistatic fabirc chair , soft and comfortable esd chair. size of chair seat: 460*430mm, size of chair back: 400*300mm RoHs, ISO9001, SGS certificate Character: antistatic fabric ( comfortable type ) SURFACE RESISTANCE: 103--- 106 Ω SYSTEM RESISTANCE: under 106 Ω HEIGHT ADJUST RANGE: OPTIONAL Height adjustable , and back adjustable , ,