On March 15th, the performance of the fuel cell sector was relatively active. The overall market was up against the market by 0.02%. 18 constituent stocks rose, accounting for nearly 50% of the total. There were 14 concept stocks in the sector which showed a large net inflow of funds. Total net inflow of large single funds was 245 million yuan.
On the news, the Ministry of Industry and Information Technology official website publicized the 306th "Road Motor Vehicle Manufacturing Enterprises and Products Bulletin" on March 14th. Two fuel cell refrigerators produced by the Dongfeng Motor Group appeared on the public list for the first time, which means fuel. The range of battery applications will be further expanded. In addition, Miao Miao, Minister of the Ministry of Industry and Information Technology, attended the inaugural meeting of China's hydrogen energy and fuel cell industry innovation strategic alliance on March 11 and pointed out that hydrogen fuel cell vehicles will be complementary to pure electric vehicles for a long time.
In terms of performance, as of now, two companies have disclosed annual report results. Shanda Walter’s net profit increased by 22.59% during the reporting period. In addition, there are 31 companies that have disclosed annual performance forecasts, and the company has achieved 23 pre-joy, accounting for more than 70%.
According to Guojin Securities, China's fuel cell industry is at the beginning of a boom. In 2018, the new government subsidy for new energy vehicles will not subsidize fuel cell vehicles. It can be predicted that China's fuel cell industry will enter the business cycle and become an important driving force for the company's sustainable growth. At present, the business model of fuel cells is clear, the domestic industrial chain is also beginning to take shape, and the accelerating trend of industrialization is obvious. It is worth paying attention to the performance-supported benchmarks. Recommended Ocean Motor, Furui equipment and so on.
Shen Wanhongyuan said that fuel cells may be the ultimate route for new energy vehicles, and China is expected to once again lead the world. It is recommended to pay attention to Dayang Electric, a manufacturer of nuclear fuel cells, as well as to actively deploy the company's shares in the field of fuel cells.
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The connection sequence of RJ-45 line in common B standard is orange white, orange, green white, blue, blue white, green, brown white and brown. When connecting different equipment, use standard a. the connection sequence is green white, green, orange white, blue, blue white, orange, brown white and brown. Generally, the pressing method of b-mark is commonly used. If you want to make a cross line, one side is a standard, and the other side is b standard.
Working in the data link layer, the switch has a high bandwidth back bus and internal exchange matrix. All ports of the switch are connected to the back bus. After the control circuit receives the data packet, the processing port will look up the address reference table in memory to determine which port the NIC (network card) of destination MAC (hardware address of network card) is attached to. The data packet is quickly transmitted to the destination port through the internal exchange matrix. If the destination MAC does not exist, it will be broadcast to all terminals After the receiving port responds, the switch will "learn" the new address and add it to the internal MAC address table. The switch can also "segment" the network. By comparing the MAC address table, the switch only allows the necessary network traffic through the switch. Through the filter and forward of switch, the conflict domain can be effectively reduced, but it can not divide network layer broadcast, that is, broadcast domain. The switch can transmit data between multiple port pairs at the same time. Each port can be regarded as an independent network segment, and the network equipment connected to it can enjoy all the bandwidth without competing with other devices. When node a sends data to node D, node B can send data to node C at the same time, and these two transmissions enjoy the full bandwidth of the network and have their own virtual connections. If a 10Mbps Ethernet switch is used here, the total flow flux of the switch is equal to 2 × 10Mbps = 20MBps, and the total flow flux of a hub will not exceed 10Mbps when using 10Mbps shared hub. In a word, switch is a kind of network equipment based on MAC address recognition, which can encapsulate and forward data frames. The switch can "learn" the MAC address and store it in the internal address table. By establishing a temporary exchange path between the originator and the target receiver of the data frame, the data frame can reach the destination address directly from the source address.
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