1313午夜一精品理论片欧美,大码午夜福利电影免费在线观看,美妇人妻性爱在线网

  • ? 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
性强烈的欧美三级视频 中文字幕国产AV女优 国产免费一区二区三区在线观看 日韩成人片无码区 天天淫av天天性av天天 青青草国产成人久久网
华安县 蚌埠市 册亨县 济源市 景德镇市 枣强县
延庆县 凤山市 紫金县 阿克 拜泉县 镇宁
辽阳县 灌南县 婺源县 拉萨市 繁昌县 汤原县