国检钻石证书可靠吗？哪种钻石证书比较靠谱

bufenchangjianguojianzuanshizhengshu：

ngtc（guojiazhubaoyushizhiliangjiandujianyanzhongxin）

gic（zhongguodizhidaxue（wuhan）zhubaoxueyuan）

nhqsic（guojiashoushizhiliangjiandujianyanzhongxin）

guojianzhengshushifouquanwei、kaopu，keyikanshifouhuodequanweirenzheng，ru，cma（china metrology accreditation(zhongguojiliangrenzheng/renke)）、cal（china accredited laboratory(zhongguorenzhengshiyanshi)desuoxie）、cnas（china national accreditation service for conformity assessment(zhongguohegepingdingguojiarenkeweiyuanhui)）、ilac：（international laboratory accreditation cooperation）guojishiyanshirenkehezuozuzhi。

duiyuxiaofeizheeryan，zaigoumaizuanshishi，zhiyaoguojianzhengshushangyousangequanweirenkebiaozhi，jiushibijiaokaopude：

1、CAL：

zheigebiaozhishizhiliangjiandujianyanjigourenzhengfuhao，guojiashouyudequanweixingbiaozhi。（shouquanrenke，daiyouzhifaxing）calshizhiliangjishujiandujubumengenjuyouguanfalvfaguideguiding，duiqiyifashouquanhuoyifashezhichengdanchanpinzhiliangjianyangongzuodejianyanjigoujinxingheliguihua、jiedingjianyanrenwufanwei，bingzaiduiqigongzhengxinghejishunenglijinxingkaohehou，zhunyuqichengdanfadingchanpinzhiliangjianyangongzuodexingzhengxingwei。yejiushishuohuodecalrenzhengjibenshangshishuyuguojiajigoudejiancejiancejigou，qitadisanfangjiancejigoujibenbukeneng。

2、CMA：

zheigebiaozhishijiancejigoujiliangrenzhenghegedebiaozhi，juyoucibiaozhidejigouweihefadejianyanjigou。genju《zhonghuarenmingongheguochanpinzhiliangfa》deyouguanguiding，zaizhongguojingneicongshimianxiangshehuijiance、jianyanchanpindejigou，bixuyouguojiahuoshengjijiliangrenzhengguanlibumenhuitongpingshenjigoupingshenhege，yifashezhihuoyifashouquanhou，cainengcongshijiance、jianyanhuodong。

3、CNAS：

zhongguohegepingdingguojiarenkeweiyuanhui（yingwenmingchengwei：china nationalaccreditation service for conformity assessment yingwensuoxiewei：cnas），shigenju《zhonghuarenmingongheguorenzhengrenketiaoli》deguiding，youguojiarenzhengrenkejianduguanliweiyuanhuipizhunshelibingshouquandeguojiarenkejigou，tongyifuzeduirenzhengjigou、shiyanshihejianchajigoudengxiangguanjigouderenkegongzuo。yejiushiduishiyanshiguojirenke，shishiyanshiziyuande，bushiqiangzhiyaoqiuyoudezizhi，danshiruguoshiyanshihuozhecansrenke，jiushishiyanshidejianceshuipingshifuheguojibiaozhunyaoqiude。

ruguogoumaidezuanshideguojianzhengshudaiyouyishangjigezizhi，shuomingcizhengshushibijiaoyanjinde。zaizhubaoxingye，yixiezhimingzhubaopinpaisuocaiyongdeguojianzhengshujunshibijiaoquanweide，birungtc、gic、nhqsicdengdoushibijiaokekaode。

lingwai，zaiwoaizuanshiwangdengguoneizhimingzhubaopinpai，bujinchujuguoneiquanweizuanshizhengshu，duiyu30fenyishangdezuanshi，haikechujugiaguojijiandingzhengshu，shuangzhongbaozhang，xiaofeizhekefangxingoumai。