2021久久国自产拍精品,欧美性猛交XXXX黑人猛交,99在线精品一区二区三区,国产成人A亚洲精V品无码,国产精品国产三级国产专区50,韩国三级在线观看久,男人女人做黄刺激性视频,亚洲AV综合A国产AV中文,日本一卡2卡三卡4卡免费网站,亚洲国产精品国自产拍AV

  • <fieldset id="6co0c"><table id="6co0c"></table></fieldset>
    <fieldset id="6co0c"></fieldset>
    <fieldset id="6co0c"><table id="6co0c"></table></fieldset>
  • <abbr id="6co0c"></abbr>
    <fieldset id="6co0c"><menu id="6co0c"></menu></fieldset>
      <fieldset id="6co0c"></fieldset>
      <ul id="6co0c"><tfoot id="6co0c"></tfoot></ul>
    • <ul id="6co0c"></ul>
    • <cite id="6co0c"></cite>
      <tfoot id="6co0c"><input id="6co0c"></input></tfoot>
      <cite id="6co0c"></cite>
      • About HILONG

        HomeAbout HilongHilong Industry

        GO Back

        Hilong Pipeline Engineering Technology Service Co., Ltd.

        Hilong Pipeline Engineering Technology Service Co., Ltd. is a research and development technology-based enterprise integrating internal and external coating of pipelines, robot internal patching, oil pipe anti-corrosion technology research and pipeline integrity technical services. Holding <01623.HK>) is a wholly-owned subsidiary. The company covers an area of ??500 mu and has a professional stacking site of nearly 200 mu. It is located in Shanghai Baoshan Industrial Park, adjacent to Shanghai Baosteel Group and East China Steel Pipe Production Base, and 3.5 kilometers away from Shanghai Luojing Port, with convenient transportation.

        The company is "Shanghai High-tech Enterprise" and "Shanghai Little Giant Cultivation Enterprise". It has won 1 national innovation fund and 2 high-tech achievement transformation projects. The project has been approved and completed. More than 30 technology development projects, more than 20 patents and utility models. Hilong Group has professional pipe research institutes and materials research institutes, as well as nationally qualified testing and inspection laboratories.
        The company has a coating production base in Shanghai, with a total of 4 pipeline internal and external coating production lines and a complete testing and inspection laboratory. The maximum coating diameter is 2.6 meters, and the maximum single steel pipe length is 18 meters. The coating capacity exceeds 15 million square meters, and various liquid coatings can be applied to the inner wall of the steel pipe, and the outer wall is coated with three layers of polyethylene/polypropylene (3PE/PP), two layers of polyethylene/polypropylene (2PE/PP), single layer Layer/double-layer/three-layer sintered epoxy powder (FEB/2FEB/3FBE), and other outer coatings for anti-corrosion processing and inspection.
        The company has established a complete ISO9001 quality management system and HSE environmental management system, and has been operating effectively.
        The company constantly summarizes scientific theories in the practice of anti-corrosion technology, and under the guidance of scientific and technological principles, through large-scale investment, it continuously improves the quality level of products and develops new materials, new processes and new products. Strive to make the company become a first-class enterprise of anti-corrosion materials and products for oil pipes, and repay the society. Relying on technology for development and quality for survival, we are willing to cooperate with domestic and foreign counterparts for common development and create a new situation in oil and gas development and pipeline construction.

        无码精品视频一区二区三区| 强奷乱码中文字幕| 在厨房被c到高潮a毛片奶水| 两腿间花蒂被吸得异常肿大| 九九国产精品无码免费视频| 国产愉拍精品手机| 欧美激情久久久久久久大片| 国内免费视频成人精品| 99re这里都是精品| 无码 人妻 在线 视频| 国产伦精品免编号公布| 中文人妻熟妇乱又伦精品| 少妇人妻偷人精品视频| 久久精品国产网红主播| 77777亚洲午夜久久多喷| 少妇伦子伦精品无码styles| 久久九九久精品国产| 亚洲精品国产精品国自产小说| 亚洲欧洲无卡二区视頻 | 久久无码人妻一区二区三区| 少妇无码一区二区三区免费| 少妇白浆高潮无码免费区| 日本一本免费一二区| 大桥未久亚洲无AV码在线| 欧美乱大交XXXXX疯狂俱乐部| 无码成人一区二区| 熟妇人妻无码中文字幕老熟妇| 欧美《熟妇的荡欲》未删减版| 两个女人互添下身爽舒服小说| 疯狂做受xxxx高潮视频免费| 内射人妻无码色AV天堂| 日本欧美一区二区三区在线播放| 丰满少妇被猛烈进出69影院| 久无码久无码AV无码| 亚洲AV成人片色在线观看| 自拍偷自拍亚洲精品情侣| 国产主播一区二区三区在线观看| 日本高清二区视频久二区| 熟妇人妻AV在线| 天堂mv在线mv免费mv香蕉| 亚洲无av在线中文字幕|