supply of polythene bags of minimum 400 mm width and 600 mm length. the thickness of poly thene should be 0.127mm minimum conforming to clause 9 of technical pamphlet no. g-81(revision- 3) ircamtech/mech/gwl/g-81/mp-5/july2019. [ warranty period: 30 months after the date of deliv ery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitt ed: max 8 lacs ] ] dy.chief material