欧洲杯预测

UL的發展歷史

19shiji90niandai,meiguofashengleyichangzhongdadehuozai,zuikuihuoshoujiushiyongdian,shigudeyuanyinshirenmenshiyongleyuelaiyueduoweijingjiancededianqilianjiehedianqichanpin。weilezuzhibeijujixufasheng,william h. merrillxianshengyu1894nianzhengshichenglileul(meiguobaoxianshangshiyanshi),zai1894nian3yue24rifabiaoletadediyifenjiancebaogao,kaishiletahanweianquandeshengya。ulshimeiguoyijiachanpinanquanceshiherenzhengjigou,yeshimeiguochanpinanquanbiaozhundechuangshizhe。zaiyigeduoshijidesuiyueli,ulyiduichengbaishangqianzhongchanpinhebujianjinxinglexiangguandeanquanbiaozhunceshi。

UL在中國

zaiguoqude30duonianjian,ulyizhizhuanzhuyuzhongguozhizaodechengchang。ulzai1980nianjinruzhongguochuqi,jiuyuzhongguojianyanrenzheng(jituan)youxiangongsi (ccic) jianlilelianghaodehezuoguanxi。shuangfangdehezuoshiyuweizhongguogongchangtigonggenzongjiancefuwubingbangzhuzhongguochanpinjinrubeimeishichang。zaiguoqude10nianzhong,ulbuduanjiadaduizhongguobentusheshidetouziyugongchengshituanduidejianshe,zhiliweizhongguozhizaoshangtigongfangbian、kuaisu、zhuoyuedebendihuafuwu。 zaizhongguodalu,chaoguo20,000 jiagongchanghezhizaoshanghuodeulrenzheng,ulrenzhengfuwurexian。

UL標記的種類


UL標記的標準尺寸


歐洲杯預測UL授權

muqianouzhoubeiyucequdeleul60950-1heul 60065zhelianggebiaozhundewtdpshouquan,jisuoyouyuceshihemujiceshikezaiouzhoubeiyucewancheng,dadasuoduanlerenzhengzhouqi。ouzhoubeiyucedeshouquanzhengshuruxia。

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