真空表 负压表 真空测量装置 负压测量装置 真空状态流量计，负压状态流量计，真空流量计量 负压流量计量 请随时联系李工 13336686138 微信同号，qq 1154428321      邮箱  1154428321@qq.com Vacuum flowmeter manufacturers, negative pressure flowmeter manufacturers.   Ningbo Mingrun Marine Equipment Co.，Ltd. No. 500, Mingzhou Road, Beilun District, Ningbo, Zhejiang Province, China Tel: +86 574 86889309 Fax: +86 574 86889309 MP: +86 13336686138 Qq:1154428321 Wechat:13336686138 E-mail:1154428321@qq.com Founded in 2010, registered capital of 11 million yuan.