丰满人妻一区二区三区免费视频,欧美囗交xx×bbb视频,亚洲AV日韩AV永久无码色欲

  • ? 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
黄色小电影在线免费观看 福利在线欧美色色色 91高清免费国产 又粗又大又黄又爽真人免费毛视频 亚洲精品乱伦巨乳 日本三级韩国三级欧美三级
昌江 广灵县 孟连 修文县 巴东县 景泰县
南川市 乡宁县 黄陵县 京山县 琼海市 九江市
大姚县 丹巴县 当雄县 怀来县 普兰店市 仁怀市