... carts 1.Intelligent, fully automatic, without any extra operations 2.Locking cylinders in one second, PGas-24 Portable 2 in 1 Gas ... for petrochemical engineering, electric power, metallurgy, machinery, gas stations, municipal works and health care industries for ... transportation, loading and unloading standard φ220 gas cylinders. Characteristics1. Compact, flexible, convenient, and ...