久久综合99RE88久久爱,色欲AV无码一区二区三区换脸,国内毛片毛片毛片毛片毛片毛片

  • ? 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
色色资源 久久国产精品视频 国内老熟妇对白xxxxhd 岛国无码手机在线视频 超级碰在线公开免费视频 色影音先锋色资源网站
台南市 怀集县 高平市 遂昌县 肇庆市 奎屯市
石楼县 招远市 汽车 遂溪县 乌鲁木齐县 鄂州市
南通市 鸡东县 名山县 上林县 江北区 五寨县