... Mainland)Grade Standard: Agriculture Grade, Electron Grade, Food Grade, Industrial Grade, Medicine Grade, Reagent GradePurity: 99.9%-99.99%Appearance ... : ColorlessApplication: Industrial ,electronic gasBrand Name: Jinhong gasModel Number: Carbon monoxide, CO, liquid gas 99.9%-99 ... Delivery Detail:Shipped in 15 days after paymentCarbon monoxide, CO, liquid gas 99.9%-99.99% At standard ...