Shirley is based in China and lists products such as Liquid Ammonia 99.9% Nh3 Gas R717, Refrigerant Gas (R290) Propane 74-98-6, Professional So2 Sulfur Dioxide 231-195-2 Gas, Gas Cylinder 99.9% Medical N2o Nitrous Oxide, 99.9%~99.99% Carbon Monoxide Gas Co Gas, and 50L High Pressure Gas Cylinder Gas Helium on Global Trade Plaza. The company lists 2007 as its year of establishment. Buyers can send an enquiry through Global Trade Plaza.