青青青视频在线-青青青视频在国线观看伊人-青青青视频免费观看-青青青视频免费-精品免费视频-精品免费久久久久国产一区

hotline:

0531-88553711

REGISTER

your site:homeNEWSREGISTER

On June 13, 2016, the Metrology Department of the General Administration of Quality Supervision,

date:2016/6/13 15:29:21type:REGISTER

On June 13, 2016, the Metrology Department of the General Administration of Quality Supervision, Inspection and Quarantine approved Jinan Zhongbiao Technology Co., Ltd. / Shandong Zhongbiao Enterprise Credit Inspection Technology Co., Ltd. to develop "Carbon Steel and Alloy Steel, Stainless Steel, Pure Iron Spectrometric Analysis Standard Material and Potassium Feldspar, Clay, Limestone, Dolomite, Fluorite Component Analysis Standard Material" and other national standard materials to The license number is "National Standard 10001532 and National Standard 10001536".