久久久久国产精品aⅴ天堂,成人性生交A片免费直播APP ,男女扒开双腿猛进入爽爽免费,日本JAPANESE少妇高清

Chengdu Yongyi Pump Industry Co., Ltd is located in Chengdu Qingbaijiang Industrial Concentrated Development Zone, specializing in R & D and manufacture of corrosion-resistant, wear-resistant pumps and agitator for more than 20 years. The company has advanced resin sand casting technology, advanced mechanical processing equipment, high volume medium frequency furnace and advanced chemical composition analysis equipment, advanced comprehensive performance testing platform, and also established a joint experiment station with the key laboratory of the ministry of fluid and dynamic machinery of West China University; company passed ISO9001: 2008 quality system certification, the design and development of its products, casting, cold processing, assembly, testing and detection are all completed by the company, Has strong complete machine supporting production and quality assurance capability, our products are widely used in chemical industry, smelting, mining, power, coal, papermaking, pharmaceutical, energy saving and environmental protection, etc., which enjoys high reputation in the industry.