先锋影音日本偷拍自拍,色色色色色女优无码,无码人妻精品一区二区三区在线

  • ? 58+

    Technical Expert Teams

  • ? 120+

    Sales For Countries

  • ? 500+

    Company People

  • ? 100000Tons

    Annual Output

about Rongsheng

Zhengzhou Rongsheng is a kiln overall solution service provider integrating, refractory, graphite electrode, metallurgical auxiliary materials research and development, manufacturing, kiln installation, and international trade. It serves metallurgy, nonferrous metals, building materials, electricity, petrochemical and other industries.

The group's headquarters is located in Zhengzhou, Henan. The factory is located in Xinmi City, the "Capital of Refractory". Xinmi city is rich in high-quality mineral resources and is close to the two railway arteries of Longhai and Beijing-Guangzhou, providing unique conditions for the production and transportation of refractory products. The main business of Rongsheng Group is the research and development, production and sales of graphite electrodes, metallurgical auxiliary materials and refractory materials, and undertakes the overall contracting business of various thermal equipment installation and construction services.

more
  • Historical process
  • FAQ
 Home  Whatsapp  Mail  Message
国产精品青草久久久久福利99 亚洲 欧洲 自拍 偷拍 首页 殴美人色色色色色 无码人妻精品一区二区三18禁 黑白配Av网站 亚洲国产大片一区官网
涟源市 新闻 红桥区 瓮安县 收藏 赫章县
天水市 思南县 杨浦区 英德市 越西县 乳山市
禄丰县 山丹县 伊宁市 浦东新区 清流县 福贡县