欧美巨大多人黑人极品HD,久久视频这里只要精品,欧美一区内射最近更新,国产成人亚洲综合无码精品

Position:Home > Technology

Introduction to non-magnetic steel - Technical standard for Herui HRNM-2(P530)


Time:2022-11-3 16:30:13 Source:http://m.jwmmybo.cn/ Author:Jiangsu HeRui alloy material technology co., LTD
The previous article: Non-magnetic drill collar types Next:Introduction to non-magnetic steel - Technical standard for Herui HRNM-3(P550 )

  • Sales contact:

    15922134617 Mr Mao

  • Technical director:

    13511685966 Mr li

Address:Factory Building 7, No. 158 Zhenxing Road, Fenghuang Industrial Park, Danyang City, Jiangsu Province
Email:Sam.mao@zjherui.com