Enter Zhenhua Technology (000733) shares, check Zhenhua Technology (000733) stock market
Transaction performance: Zhenhua Technology (000733, shares it) (000733) announced yesterday that the company will jointly establish a joint venture with Dr. Li Shujun to establish Dongguan Zhenhua New Energy Technology Co., Ltd., engaged in research and development, production and sales of lithium-ion power batteries. Stimulated by the news, the stock opened sharply higher on Thursday, and after a brief correction, it quickly closed the daily limit.
Comments: The company is mainly engaged in the development, production and sales of electronic information products. It has great advantages in the development of LED light-emitting diodes. It is the new military electronic component base with the strongest comprehensive supporting capability in China.
Judging from the public information of yesterday's trading, there is no institutional entry or exit in the stock. The main push for the daily limit is hot money. Among them, CITIC Jiantou Securities Wuhan Zhongbei Road Sales Department bought about 32.53 million, ranking first in the buyer's seat; Caitong Securities Wenling East The sales department of Huibei Road bought about 11.31 million, ranking second in the buyer; while the sales office of Yantai Road, the wealth securities of the first place in the market, sold about 9.06 million. Taking into account the company's entry into the new energy theme, it is expected that the market outlook will still have a high potential, which can be properly concerned.
Product introduction
1000kVA and above Oil Immersed Transformers must be equipped with outdoor signal thermometers and can be connected to remote signals. Oil immersed transformers of 800kVA and above shall be equipped with gas relay and pressure protection device. Oil immersed transformers of 800kVA and below can also be equipped with gas relay according to the use requirements and through consultation with the manufacturer. Dry type transformers shall be equipped with temperature measuring devices according to the manufacturer's regulations, generally 630kVA and above transformers.
According to the phase number of a single transformer, it can be divided into three-phase transformer and single-phase transformer. In three-phase power systems, three-phase transformers are generally used. When the capacity is too large and limited by transportation conditions, three single-phase transformers can also be used to form a transformer bank in three-phase power systems.
According to the number of windings, it can be divided into two winding transformers and three winding transformers. Generally, transformers are double winding transformers, that is, there are two windings on the iron core, one is the primary winding and the other is the secondary winding. The three winding transformer is a transformer with large capacity (above 5600 KVA), which is used to connect three different voltage transmission lines. In special cases, there are also transformers with more windings.
According to the structure, it can be divided into core type transformer and shell type transformer. If the winding is wrapped around the iron core, it is an iron core transformer; If the iron core is wrapped around the winding, it is a shell type transformer. However, they are slightly different in structure and have no essential difference in principle. All power transformers are iron core type.
According to insulation and cooling conditions, it can be divided into oil immersed transformer and Dry Type Transformer. In order to strengthen the insulation and cooling conditions, the core and winding of the transformer are immersed together in the oil tank filled with transformer oil. In special cases, such as street lamps and mine lighting, dry-type transformers are also used.
In addition, there are various special transformers for special purposes. For example, high-voltage transformer for test, transformer for electric furnace, transformer for electric welding and transformer for SCR circuit, voltage transformer and current transformer for measuring instrument.
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