欧美日韩一区二区三区四区在线观看,久久国产精品二国产精品,啊灬啊灬快灬高潮了深视频

  • ? 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
日韩人妻无码精品—专区 久久人妻无码毛片a片麻豆 亚洲精品乱码久久久久久按摩 国产美女爽到喷出来久久久久 国产欧美日韩精品第一页 最新国产精品久久精品
张掖市 资溪县 循化 龙门县 华亭县 五大连池市
贺州市 和顺县 临海市 东海县 腾冲县 芮城县
泰兴市 龙川县 启东市 芦溪县 友谊县 孟州市