Industrial Gases, Specialty Gases, Electronic Gases manufacturer / supplier in China, offering Hot-Selling 50kg/118L Industrial Grade 99.5%-99.9% Purity ISO-Butane I-C4h10 R600A Gas Refrigerant Gas, Industrial Grade 99.9% ISO-Butane I-C4h10 in 47L / 118L / 926L Gas / ISO Gas Refrigerant Gas, 450kg Per 926L Gas Loading Refrigeration Gas R600A Industrial Grade 99.9% Purity ISO-Butane I-C4h10 Refrigerant Gas and so on.