Established in 2002, Shanghai Quntong Spray Packing Material Co., Ltd. specializes in the manufacturing of all kinds of special aerosol products accessories. The main products include 1" metering valves, 20mm metering valves, small size fire extinguisher valves, nailer valves, EP aerosol valves, aerosol cans and spray pumps. Meanwhile, we can design and develop special types of products according to customers' ...