1.Reliable aftersales service 2.High oil out-put 3.1 year quality guarantee 4.High automatic 5.ISO&CE (1)SecurityOur devices have ... pressure gauges,alarms,safety valves and vacuum equipment.Also have ... passed the ISO-9001,ISO-14001and CE certification(3)High degree automaticEquipments can feed,slagging,alarm,decompress,adjust negative ...