国产xxx69麻豆国语对白,国产人妻人伦精品久久久,日本色图新地址

  • ? 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
伊人久久大香线蕉av五月天 久久国产精品无码一区二区三区 精品视频中文字幕 东京热DVD在线视频 亚洲精品精品久久 日韩免费在线视频
云霄县 武安市 句容市 佛冈县 宁安市 保靖县
墨江 乡城县 克什克腾旗 荣成市 石屏县 麟游县
尚志市 阳山县 赣州市 公主岭市 都匀市 琼海市