Ningbo Dely Automation Co. ltd specailly manufacture and market hydraulic ball valve, hydraulic fitting, oil cooler, pneumatic cylinders, pneumatic control element, air source units, pneumatic execute element and pneumatic assistant. We have passed ISO9001:2000 quality system authentication. With advanced technology and equipment, good quality,our products sale far to many countries. In order to meet more and more customer's requirements. We always stick to the enterprise spirit "Quality First, Good Serivice, Mutal Benefit"