国产一区二区三区日韩精品,xxxxx非洲黑人猛内射,国产精品久久久久久av福利,久久精品国产清自在天天线

Home  /  News  /  Goldcard smart as the main drafting party helped with the release of the world's first NB-IoT diaphragm gas meter standards
Goldcard smart as the main drafting party helped with the release of the world's first NB-IoT diaphragm gas meter standards
Time:2018-11-21 17:37:44

Recently, the standard "Diaphragm gas meter with NB-IoT wireless remote-reading" was released by Zhejiang provincial brand building association. The standard was developed by Zhejiang institute of metrology, and Goldcard was one of the main drafting parties.


Drafted based on Chinese national standard GB/T 6968-6968, and take references from the most advanced and universallyrecognized European standard EN 1359:2017, it has been considered as the world's first NB - IoT diaphragm gas meter standard, meanwhile, reached the leading level in the international gas meter industry.As the first national single communication technology basedgas application standard, it has also opened a new situation for the standardization, rationalization and standardization of smart gas metering development.




1.jpg


After long term development and improvement, as well as tests and pilot run, Goldcard NB – IoT smart gas meter is completely comply with this standard in all aspects including technology, manufacturing, quality and service level etc.. In the future, Goldcard will continue to improve innovation and R&D. In the era of Internet of things, we will help gas companies to achieve breakthroughs in business upgrading and complete perfect transformation.



2.jpg


The standard "Diaphragm gas meter with NB-IoT wireless remote-reading" follows the EU standard, focusing on detailed terms on the measurement features, technical requirements, and test methods of NB - IoT diaphragm gas meter, it took reference from the terms of the EU standards and clearly defined the outline of the standard, meanwhile increased relevant requirement on the key component quality control, manufacturing capacity, service ability etc. of the NB - IoT diaphragm gas meter. Through indexes and data, this standard reflects the data transmission security issues, power consumption problems, network coverage problem and large volume of meters’ access and connection issues, that can be solved by adopting NB - IoT communication technology.。


 3.jpg


亚洲精品乱码久久久久久自慰| 一区二区三区在线 | 欧| 风韵丰满熟妇啪啪区老熟熟女| 东北少妇不戴套对白第一次| 怡红院免费的全部视频| 久久亚洲精品国产亚洲老地址 | 亚洲熟女综合色一区二区三区| 麻豆一区二区三区精品视频| 无码丰满少妇2在线观看| 欧美成人一区二区三区| 国产99久久九九精品无码| 精品国产第一国产综合精品| av狠狠色丁香婷婷综合久久| 久久久久成人精品无码| 日本欧美视频在线观看| 狠狠爱无码一区二区三区| 精品+无码+在线观看| 欧美黑人粗大猛烈18p| 99无码精品二区在线视频| 亚洲av无码日韩av无码网站冲 | 少妇被黑人到高潮喷出白浆| 又爽又黄无遮挡高潮视频网站 | 精品无码成人片一区二区98| 中国凸偷窥xxxx自由视频| 亚洲 欧美 综合 另类 中字| 国产啪亚洲国产精品无码| av鲁丝一区鲁丝二区鲁丝三区| 尤物yw午夜国产精品视频 | 亚洲精品无码久久久| 亚洲精品无码久久毛片| 日韩免费视频| 国产高清一区二区三区视频| 久久久久亚洲av成人人电影| 亚洲另类激情综合偷自拍图| 青春草在线视频免费观看| 久久精品国产精品亚洲精品| 免费看无码特级毛片| 男ji大巴进入女人的视频小说| 国产精品后入内射日本在线观看 | 久久www免费人成一看片| 欧美老妇与zozoz0交|