国产精品视频九九九,九九福利色播,乱人伦人妻中文字幕不卡

  • ? 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
爱爱精品无码视频 亚洲色图第五页 国产一区二区三区内射高清 亚洲国产婷婷六月丁香 欧美性一区二区三区 久久99久国产精品黄毛片佳人
固安县 古交市 阿尔山市 黄大仙区 康平县 彰化市
思南县 大兴区 隆昌县 定南县 马关县 富平县
中方县 玉林市 繁峙县 年辖:市辖区 年辖:市辖区 桑日县