High-capacity production line system featuring a four-station automatic refrigerant charging machine Product Overview HongCe Four Station Automatic Refrigerant Charging Machine is a rotary turntable production system that performs vacuum evacuation and quantitative refrigerant charging on four stations in a continuous cycle. Designed for high-throughput air conditioner, dehumidifier, and refrigeration component production lines, the machine achieves 80-120 pcs/h with PLC