亚洲精品欧美综合二区,熟妇色在线视频不卡,免费观看非洲骚人日屁屁一级录像片

  • ? 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
亚洲综合色区无码一区二区 av天堂影音先锋com 偷拍第115页 最刺激的乱惀小说目录 懂色av蜜臀av粉嫩av 色色网站va
临海市 蒙自县 揭东县 赞皇县 临江市 宣恩县
黎平县 乌兰浩特市 集安市 沙河市 大洼县 当阳市
屏边 阿拉尔市 罗定市 黑水县 海丰县 长岭县