SIHOO M18 Ergonomic Office Computer Chair Adjustable Head SIHOO office chairs have been certified by BIFMA and SGS, passed 2000lbs static pressure test. It can carry a weight of up to 330lbs. Every part of this computer office chair has strict safety quality testing, cushion impact test, handrail fatigue test, chair fo
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Sihoo M18 Ergonomic Office Chair
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