bids are invited for high back revolving chair - chair should be central tilt having backrest with lumber supportofpolypropylene across back. arms should be fixed, back should be push back. seat and back should be madeupof 100% polyester fabric .gsm/thickness of fabric should be 250 gram .thickness of polyurethane foam used in seat& backrestshould be 45 mm or above. dimensions should be 1080 x 400x 500 mm hxdxw . backrest should be made of twopiece injection moulded frame. certification required are iso 9001,14001,45001,aiota,bifma membership and green pro. , medium back rev chairs - chairshould havemulti locking and synchronized mechanism havingbackrest symmetrical support. arms should befixed . seat and back should be madeupof 100% polyester fabric .gsm/thickness of fabric should be 250 gram or above . thickness of polyurethane foam used in seat& backrestshould be 45 mm or above. dimensions should be 810x 400x360 mm hxdxw .backres should be made upof onepiece injection moulded frame. certification required are iso 9001,14001,45001,aiota,bifma membership and green pro. , visitor chair - chair whose seat and back should be madeupof 100% polyester fabric . gsm/thickness of fabric should be 250 gram or more. thickness of polyurethane foam used in seat& backrestshould be 35 mm or above.size of material should be 16 g 20 mm or above roundpipe .thicknessofplywoodusedinseatshould be 12 mm . dimensions should be 890 x 450 x470 mm hxdxw . arm should befixed and powder coatedon ms should beprovidedhavingcantileverframeandnylon rubber shoe type.certification required are iso 9001,14001,45001,aiota,bifma membership and green pro. , ex.visitor chairs - chair whose seat and back should be madeupof 100% polyester fabric .gsm/thickness of fabric should be 250 gram or more. thickness of polyurethane foam used in seat & backrestshould be 45 mm or above.size of material should be 2 mm or above thick and 25 mm or above tube .thicknessofplywoodusedinseatshould be 12 mm or above . dimen