ACD owns to American low temperature group. American low temperature is the biggest supplier for low temperature equipments and is a leader in high pressure, high flow, low temperature equipment designing and manufacturing. Its products are widely used in industry and oilfield. The headquarter of ACD is located in CA, USA, and has twelve sales and service company locating in America, Canada, Germany, Malaysia, Austria, UK, China and Korea. SLS series triplex pump(1100HP) and quintuple pump(1500HP) is specially for nitrogen equipments. The power end and cold end are designed by ACD and have several patents.