Ningbo Yinzhou XinghuaMetal Products Factory which is one of the top lead manufacturers in China which was established in 1992. Nowadays we have developed into 20series, 300 varieties, including valves, repair tools, wheel parts and accessories. Zinc alloy valve is our patent products. Besides we have been passed TUV quality certification and ISO9001: 2000 certification. We own advanced automatic high and low pressure leak testing machines, ozone-resistant testing machine, high and low temperature ageing-resistant testing machines and others for high efficient management and best quality.