亚洲中文色欧另类欧美小说,韩国免费高清一级毛片性色,精品国产凹凸成AV人导航

  • ? 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
jizzjizz少妇亚洲水多 97久久精品亚洲中文字幕无码 免费无码专区毛片高潮喷水男男 国产农村性生活片在线观看 亚洲18 成人网页 av无码精品一区二区三区
宁国市 登封市 曲靖市 雅安市 高雄县 郎溪县
嵩明县 都匀市 县级市 石渠县 宣城市 会东县
古蔺县 名山县 黑山县 元朗区 合作市 青川县