The data shows that in 2015, China's telecom information manufacturing industry has reached 11.1 trillion yuan, ranking first in the world. It has formed a relatively complete information industry system. The number of Internet users has reached 700 million, and the Internet penetration rate has exceeded 50%. The access volume reached 470 million. Zhuang Rongwen, deputy director of the National Internet Information Office, said that although China's informatization and Internet development have achieved world-renowned achievements, China has become a veritable country, but it is not a network power. We still have some weak environment and outstanding in the development of information technology. Short board. For example, in terms of core technologies such as integrated circuits, technology software, and core components, we are still not completely autonomous and subject to people. The safe and controllable industrial form has not yet formed, and the informationization of the industry is unbalanced and uncoordinated. In addition, there is a â€œdigital divideâ€ between regions and between urban and rural areas. The lack of development and utilization of information resources coexists with disorderly abuse, and the digital dividend has not been marketed.
For the shortcomings in China's information and communication infrastructure construction, Zhang Feng, chief engineer of the Ministry of Industry and Information Technology, said that the next step will be to further expand the construction of information and communication infrastructure, and promote the development of high-speed fiber-optic broadband networks in terms of fixed broadband. That is to say, the construction of all-optical network cities, urban areas must basically complete the transformation of the old residential optical network, to achieve optical network coverage, rural areas must basically achieve the administrative village fiber access.
For the "National Informatization Development Strategy Outline" promulgated on the 27th, the strategic goal of actively developing the R&D, standards and industrialization of the fifth generation mobile communication (5G) technology is also proposed. Zhang Feng, chief engineer of the Ministry of Industry and Information Technology, also said In technical research, we have completed the research of 5G vision and demand, released the 5G concept and infrastructure, and made breakthroughs in key technologies such as large-scale antenna and network architecture. In terms of standardization, it has fully participated in the ITU and 3GPP, 5G international standardization work.
RCCB named Residual Current Circuit Breaker. When there is human electricity shock or if the leakage current of the line exceeds the prescribed value, Residual current circuit breaker/RCCB(without over-current protection) will cut off the power rapidly to protect human safety and prevent the accident due to the current leakage. The rccb switch which made from Korlen electric can be used as infrequent changeover of the line in normal situation.
Korlen electric ---- the rccb switch manufacturer,produces types of Residual Current Circuit Breaker. It is applicable to industrial site, commercial site, tall building and civil house.
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Wenzhou Korlen Electric Appliances Co., Ltd. , https://www.zjaccontactor.com