HEYZO无码综合国产精品227,免费裸体性爱在线视频,黄色无毒网站强奸在线播放

  • ? 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
午夜性色一区二区三区不卡视频 国产精品一品二区三区 日本中文字幕一区二区三区高清 天堂网女尤 色色资源站五月 亚洲午夜小视频
仙居县 烟台市 宁蒗 当阳市 张家界市 太湖县
汶川县 隆昌县 鹤壁市 阿克 普洱 阜宁县
东辽县 昭苏县 赤城县 泰州市 克拉玛依市 邹城市