亚洲私拍福利视频,精品亚洲专区无码,午夜精品久久久久久久9蜜桃

  • ? 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
女优中文影音先锋 欧美性猛交xxxx黑人猛交 中文字幕国产精品第一页 色费女人18毛片a级毛片视频 人人摸人人操 高潮vpswindows国产乱
繁昌县 敦煌市 吉隆县 祁门县 常熟市 庆阳市
沈丘县 祁连县 二手房 西充县 都安 上虞市
阜平县 海丰县 榆中县 广平县 永州市 屏边