成 年 人 黄 色 视频 网 站了,91探花国产综合在线精品,精品无码久久久久久国产

  • ? 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
捆绑反绑性奴芙美 殴美一区区肛交毛片 免费观看污污视频一区二区 超级色的网址 国产精品V欧美精品∨日韩 av拌阴
武定县 汪清县 北宁市 云南省 怀宁县 澜沧
怀柔区 普兰店市 奉节县 科尔 玛纳斯县 宁海县
黑河市 中西区 比如县 清远市 潢川县 太康县