Tenders for Supply of Liquid Petrolium Gas Type-Commercial Butane - Propane Mixture To Is:4576/2021 Rev-3. In 19 Kg Cylinder.. Liquid Petrolium Gas Type-Commercial Butane - Propane Mixture To Is:4576/2021 Rev-3. In 19 Kg Cylinder. Warranty Period: 30 Months After The Date Of Delivery