bids are invited for nitrogen gas ( 47 ltr) , c2 gas mixture , c2 gas mixture 10ltr , c3 gas mixture , c4 liquid mixture , no , co , so2 , ch4 , o2 , nitrogen 99.999% , ch4 3 ltr , ch4 10ltr , ch4 0.5 ltr , c2 gas , c3- liquid mixture , c4- liquid mixture , lpg liquid gas , repaiing and hydro test hydrotesting of cylinders refilling of fire extinguisher cylinders, refilling of industrial gases in cylinders, refilling of medical gases in cylinders, hiring of pos (point-of-sale) devices, hiring of vessels, hiring of boats, selection of laboratories for testing of productsmaterial, hiring of custom broker - per bill of entry based, hiring of helicopter service, hiring of chartered aircrafts relevant mobile repairing kit (gujarat govt) total quantity : 104