宁成: domestic and international renowned research engineer Gas Gas Spring Spring more than 20 years, dozens of patents, products around at home and abroad, the Chinese gas spring professional members of the Commission, has several gas springs enabling enterprises. China is committed to research and development of the domestic gas spring research projects and the development of industry standards!
Phone 13651199423 Beijing office Zhengjingli Dedicated
mail: gas-spring@hotmai.com
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Spring gas industry group dedicated QQ: 27879322
Gas spring professional guidance official website http://www.gaspring.org/
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