Industrial metal cutting gas (lpg), 19 k [industrial metal cutting gas (lpg), 19 kg non - domestic non - exempted (ndne) cylinder, confirming to id 4576:2021 (fourth revision ) note: in firms returnable cylinder 1) supply should be effected in part quantity based on consignee request 2)supplier has to supply cylinders as per requirement of consignee note: condition-empty cylinders of the firm will be returned back after completion of the work ]