少妇性荡欲午夜性开放视频剧场,狠狠噜天天噜日日噜av,亚洲熟少妇在线播放999,国产欧美久久一区二区,国产激情精品一区二区三区

CTTC has established a metrological calibration laboratory with the capability of metrological calibration in the fields of textile, mechanics, chemistry and optics, which has been accredited by the China National Accreditation Service for Conformity Assessment (CNAS). The laboratory has owned a qualified technical metrology team and been equipped with cutting-edge calibration tools and instruments,  which can guarantee the uniformity of measurement values and the accuracy of measurement instruments. It can provide timely and professional services including metrology calibration, related technical consultation, training, maintenance, commissioning, and customer instrument delivery and on-site metrology services to meet the various needs. At the moment, the customers served from CTTC have been covered across the nation, such as inspection and testing institutions, enterprises and institutions, schools, etc.