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，congzhongshiyounengyuanyihaowangzhandongtaihuoxi，dongtukejichenggongqudelezhongguoshiyoutianranqijituangongsibanfadewuzigongyingshangzhunruzheng
，zhici
，dongtukejizhengshijinruzhongshiyoutianranqijituanzhidingwuzigongyingshangdexinglie，chengweizhongshiyouxitongneishoujiagongyeyitaiwangjiaohuanjizhunrugongyingshang。

  《物資供應商準入證》是由中石油總部管理的在其集團公司的全資子公司、直zhi屬shu企qi事shi業ye單dan位wei具ju有you同tong等deng效xiao力li的de供gong貨huo準zhun入ru證zheng，供gong應ying商shang可ke在zai準zhun入ru產chan品pin範fan圍wei內nei向xiang中zhong國guo石shi油you天tian然ran氣qi集ji團tuan公gong司si供gong貨huo。東dong土tu公gong司si的de工gong業ye以yi太tai網wang交jiao換huan機ji係xi列lie產chan品pin取qu得de準zhun入ru資zi質zhi，全quan為wei二er級ji物wu資zi產chan品pin。

   東土科技作為一家自主研發，具有核心技術優勢的網絡通信係統解決方案提供商，一直致力於為客戶提供穩定、可靠、靈活、zhinengdechanpinyufuwu，cicizhengshudehuodegengshiduijinnianlaigongsizaizhongguoshiyouzhongduoxiangmuzhongchusebiaoxiandekending，weicujindongtukejidekuaisujiankangfazhan，tigongleshichangdetongxingbaozheng。