亚洲欧洲自拍拍偷午夜色,成人免费一级毛片在线播放视频,日本一区二区高清不卡

  • ? 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
久久精品九九亚洲精品 做爱在线资源 激情亚洲网 日本丶国产丶欧美色综合 色色先锋强奸影音 精品一区二区久久久久网站
金湖县 清水县 阜平县 衡阳县 屯门区 香河县
柘城县 天全县 兴安县 剑阁县 盐城市 报价
伊川县 南充市 临猗县 奉贤区 建水县 嘉峪关市