亚洲a∨国产av综合av下载-又硬又粗进去好爽免费-人人妻在人人-人妻熟妇乱又伦精品视频中文字幕

WHO WE ARE

We are professional diamond and CBN manufacturer,
Making Efforts To Press Ahead is our Philosophy,
Achieving sustainable transmission is our goal.


Company display

Factory display

Workshop environment

Office environment

Company environment

Development History

Development History
  • Year 2003
    the first set of resin bond CBN double-side surface grinding wheel was developed.
  • Year 2004
    the wear-resistant high speed hydrostatic bearing grinding wheel was successfully put into the market.
  • Year 2004
    Bold Vitrified CBN grinding wheel specialized for miniature bearing industry was successfully developed.
  • Year 2006
    ISO9001 certification were passed as the first in this industry.
  • Year 2006
    Zhengzhou Forture Tool Co., Ltd. Was established.
  • Year 2007
    Bold metal bonded diamond grinding wheel was successfully developed.
  • Year 2007
    High abrasion resistant glass grinding wheel was successfully put into the market.
  • Year 2008
    Shanghai branch of Bold was established.
  • Year 2008
    diamond grinding wheels with high sharpness grinding PCD tools were successfully put into the market.
  • Year 2008
    diamond grinding wheels with high sharpness grinding PCD tools were successfully put into the market.
  • Year 2009
    Bold was awarded the title of Henan hi tech enterprise.
  • Year 2009
    we successfully developed a series of grinding wheels for monocrystalline silicon rod grinding in photovoltaic industry.
  • Year 2010
    "Bold" trademark was awarded the title of "national famous brand".
  • Year 2011
    we set up the research and Development Department of sophisticated abrasives.
  • Year 2012
    Bold won the honorary title of "Henan province credit construction demonstration unit".
  • Year 2014
    special silicon wafer grinding wheels for photovoltaic industry were developed and produced, which filled the gaps in this industry in China.
  • Year 2014
    special grinding wheel for PV(photovaltaic) glass was developed.
  • Year 2014
    high grade electroplated diamond (CBN) abrasives were developed and put into operation.
  • Year 2015
    Bold Shanghai Pudong cutting tool branch was established.
  • Year 2015
    The third factory of bold was established.
  • Year 2016
    Xinxiang BYD abrasives Co., Ltd. Was established.
  • Year 2017
    Xinxiang Boruite Super Material Co.,Ltd. Was established.
  • Year 2017
    Shanghai YuCheng Diamond abrasives Co.,Ltd. Was established.
  • Year 2017
    Xinxiang BSD abrasives Co., Ltd.was established.
  • Year 2018
    Xinxiang Boruite Super Material Co., Ltd.was established.
  • Until 2018
    Bold Group has owned 57 national patent technologies.

Bold Group

Forturetools

Yucheng Diamond

BYD Abrasives

YuCheng

Malaysia
ADD: No.10 Dongqing Street,
High&New tech Development Zone.
Zhengzhou, Henan, China.
Postal code: 450001 E-mail:info@bold68.com
Phone: 0371-67662016 86162612
?Copyright 2004 Zhengzhou Bold Abrasives Co., Ltd. All Rights Reserved.
Leave Message
Name
Telephone
E-mail/QQ
Message
主站蜘蛛池模板: 国产精品永久免费视频| 精品久久久久久久久久中文字幕| 无码高潮少妇毛多水多水| 2022国产成人精品视频人| 性一交一乱一伦| 亚洲av无码一区二区三区网站| 日韩一区二区在线观看视频| 好吊视频一区二区三区| 无码一区二区三区视频| 欧美综合自拍亚洲综合图片区| 国产97在线 | 免费| 久久久久88色偷偷| 国产+成+人+亚洲欧洲自线| 人妻无码久久精品| 特级毛片a级毛片在线播放www| 97久久天天综合色天天综合色hd| 51国产偷自视频区视频| 色又黄又爽18禁免费网站现观看| 欧美人和黑人牲交网站上线| 亚洲色成人四虎在线观看| 爆乳熟妇一区二区三区霸乳| 天堂中文官网在线| 亚洲av无码成人网站在线观看| 又大又长粗又爽又黄少妇视频| 国产女人高潮抽搐叫床视频| 婷婷五月六月激情综合色中文字幕 | 国语对白嫖老妇胖老太| 亚洲男人第一无码av网站| 大地资源网高清在线播放| 亚洲老妈激情一区二区三区| 免费观看a级片| 伊人久久大线影院首页| 青楼妓女禁脔道具调教sm| 国产国产人免费人成免费视频| 国产精品人人爽人人做我的可爱| 亚洲色图片区| 成 年 人 黄 色 大 片大 全| 日韩毛片免费无码无毒视频观看 | 日本不卡一区二区三区| 少妇午夜啪爽嗷嗷叫视频| 又黄又爽又高潮免费毛片|