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In recent years, the world's leading vehicle enterprises to consolidate their market position, strong alliance, to achieve complementary advantages and resource sharing, the traditional vehicle market has formed a relatively stable market pattern. From January to May 2021, there are 10 automobile enterprises with a global sales volume of more than one million vehicles, with a total sales volume of 24.603 million vehicles, accounting for 72.8% of the global automobile sales market. The top 10 are dominated by Japanese, German and American traditional automakers, among which Toyota, Volkswagen and Renault-Nissan-Mitsubishi alliance are the top three, with sales of more than 2.9 million vehicles and a total market share of 31.7%. The sales volume of Toyota in the top 10 is 4 times that of Daimler in the 10th. Meanwhile, Stellantis group, a merger of Fiat Chrysler and Psa Peugeot Citroen, made the top four.

First, there were hardware upgrades. Most of the G-6 engines had steel pistons instead of aluminum ones to accommodate greater implosion pressure. Some of the engines have also been optimized, such as water channels, in order to meet the high explosive pressure and high temperature of the state VI engine. The second device is the EGR, which is aimed at the GVI engine of the EGR route. Non-egr models like Cummins do not have this device. EGR is mainly for the secondary utilization of part of the exhaust gas discharged from the engine. That is, EGR cools part of the exhaust gas into the intake pipe and participates in combustion again to reduce the nitrogen oxide of the exhaust gas. The throttle is also an important part of the sixth engine. The throttle is mainly used to control the air intake and exhaust volume to meet the requirements of accurate combustion. The exhaust throttle also plays a role in controlling the exhaust temperature, especially when the engine is just started, the temperature can be quickly raised by closing the exhaust throttle to meet the temperature requirements of post-processing. The six computer version and the five are not the same, the computer version increased a number of cable sockets, mainly because the six chassis and the vehicle need to process more signals, including the post-processing signal is also needed to the engine computer version, so the six computer version of the interface is more. And the PC version of the Engine, which Bosch currently supplies for most of the engine, will be faster, as it needs to process and analyze signals and make decisions in a very short time. The last key addition is the seventh nozzle, which as the name suggests is the seventh injector on the engine and does not participate in engine work. The seventh nozzle is installed on the exhaust manifold and is mainly used for post-treatment. When the DPF needs high-temperature regeneration, the ECU controls the seventh nozzle to inject diesel into the exhaust pipe. Diesel oil burns at high temperature and then rapidly increases the exhaust temperature to burn off the plug on the DPF.

Since April this year, the sales of the heavy card market has suffered a Waterloo, and the sales decline has broken through the psychological defense of some dealers. The market cold from April to now, so that many dealers operating pressure doubled. According to some dealers: due to the busy season in 2020, the staffing of one network stores has basically doubled, and store operating costs have also risen. But the sudden drop in sales in 2021, even before stores realized it, cost far more than the profit portion of the increase in sales at the beginning of the year. As the market continues to decline, even if stores reduce staff and reduce labor wage costs, other costs still make store operations unbearable. Especially for the dealers with a large inventory in The fifth country, they were once faced with a dilemma: fewer staff made it harder to open the market. But without a reduction, the cost is simply unsustainable.

In recent years, the organizers insist on the service to the idea of all the exhibitors as a code of conduct throughout the organization work, follow the development of specialization, the brand guidelines, committed to improving the exhibition organization level and service level, with attending the exhibitors and visitors in the audience to build more effective communication platform with unremitting efforts. The national Auto parts Fair has become an influential authoritative exhibition in China's auto parts industry, won the approval of the industry, but also won the praise of all the host cities, is currently China's auto parts industry exhibition scale, professional audience, industry influence strong grand event. We will continue to uphold the purpose of "service, exchange, cooperation", to promote the development of China's auto parts industry as its own responsibility, for the take-off of China's auto parts industry to provide more professional exhibition services. Excellent returns from the selection of the National auto parts fair and the National Auto parts purchase fair start

The exhibition originated in 1965 and now Tours different cities in China every spring and autumn. Past by "China auto parts balance dispatch meetings", "China auto parts production scheduling order" to "China auto parts show" nearly 50 years, the planned economy period, in the stock material distribution plan, adjust enterprise played an important role, such as work thus laid the organizers in China auto parts industry a solid management foundation and special * * *. With the continuous development of market economy, the national auto parts is also developed to a vehicle, auto parts, automobile electrical appliances, auto supplies and modification, metal equipment, car decoration, maintenance products as the main professional exhibitions exhibition content, and with exhibition, BBS, meetings, product promotion and negotiation with the combination of form, for the automobile industry provides a professional platform for the exchange and cooperation. Scope of exhibition: engine/chassis and body/automotive electrical appliances/oil products, maintenance supplies, automotive supplies, auto maintenance equipment and tools/materials and common parts, etc This exhibition will continue to organize a series of in-session activities, including various forums, lectures, special decoration evaluation, new products free exhibition area.

In order to maximize the possible arrival of the peak season to seize the opportunity, in the process of waiting, dealers are not sitting still, but in advance to make full preparations for orders at any time. According to some dealers, now everyone is quick to sell the five guoguo hand, not sell guoguo six more popular models. October may be the last sales opportunity of the year for China's well-stocked dealers. On the one hand, if the dealers with large inventory do not rush to finish the inventory in the last peak season, they will have too much stock and occupy a large amount of capital, which will have a negative impact on the enterprise operation. Secondly, the promotion of the sixth country is not smooth at present, so it is the best choice to choose the fifth country to maximize the interests.

Summer is the season when truck air conditioning is used most frequently, and it is also the season when card users rely on air conditioning most. Meanwhile, truck air conditioning is also more prone to problems in this season. Foton car reminds you card friends, proper maintenance is especially necessary, and the use of more care is the secret of smooth operation of air conditioning. How to use air conditioning after exposure? After the car is exposed to the sun in summer, it must be very painful when just getting on the car. If you blindly turn down the air conditioning temperature and increase the air volume at this time, in fact, the speed of the temperature drop in the car is very slow, and you can only feel a little cool at the outlet. Want to quickly cool the method is actually very simple, open the Windows, use the air conditioning of the external circulation blow state of the hot air in the car first exhaust, 2-3 minutes later and then close the window open refrigeration, so that the refrigeration efficiency of the air conditioning must be higher. When the vehicle starts/turns off, the time when the air conditioning is turned on These are two very easy to ignore details, many card friends in the summer will be air-conditioning refrigeration open for a long time, this practice for the damage of the vehicle is more serious. First of all, the starting state of the air conditioning compressor will increase the load of the electrical system, and the load of the starter will be increased when it is started. Long-term starting with air conditioning will affect the life of the starter, especially for the middle and low-end models. Some high-end models have automatic air conditioners with protection functions, the compressor will not work until the vehicle starts. Again, the state of extinguishing, air conditioning refrigeration internal will backlog a lot of water, directly after extinguishing the water can only backlog in the air conditioning inside, for a long time must be mildew, bacteria, a lot of card friends have smelled the sour smell should come from this. So the correct way to use it is to turn on the air conditioner after each vehicle starts, and shut down the air conditioner compressor 2-3 minutes in advance before the vehicle turns off each time. The air outlet blows upward for the best cooling effect Random adjustment of the direction of the air outlet will affect the refrigeration efficiency of the air conditioner. According to the principle of cold air sinking and hot air rising, the air outlet upward in the refrigeration state can play the best refrigeration effect. It is not good to adjust the air conditioning temperature to the lowest for a long time Even if the heat is unbearable, it is best not to adjust the air conditioner to the lowest temperature for a long time. The huge temperature difference between inside and outside the car is easy to cause colds and even air conditioning illness. If it is an automatic constant temperature air conditioner, 26° is the most appropriate temperature. Check diligently First, often check the air conditioning filter and air duct. The dust on the road is more, it is easy to adsorb on the filter element, causing blockage and breeding of bacteria, and the air channel is also easy to accumulate dust, which often causes the air volume of the air conditioner to become smaller and produce mildew odor odor. Therefore, it is best to replace the air conditioning filter every summer. Secondly, it is best to use high pressure water gun to clean the condenser located in the front of the car every time when washing, to prevent the heat dissipation blade from being blocked by insects, leaves and other debris, affecting the heat dissipation effect. Regularly check the tightness of the air conditioning compressor belt, the belt is too loose will cause skid, so that the compressor can not work normally, and too tight will aggravate excessive wear and fracture of the belt. Good refrigerant The most common faults of vehicle air conditioning system are refrigerant leakage and poor refrigeration. The cause of refrigerant leakage is usually caused by the aging of the seal ring in the pipeline and the damage of system components. Therefore, in the process of maintenance, we must ensure the quality of refrigerant and refrigerant oil. If inferior refrigerant is used, it will lead to abnormal compressor, poor refrigeration, pipeline corrosion and explosion, damage to important components, etc. In case of poor refrigeration, professional inspection and maintenance are required.

In the first half of the year, the global auto industry achieved positive growth, but the global auto industry has yet to recover to the pre-epidemic level due to the complex and volatile situation of the epidemic. In China, the epidemic prevention and control is effective, and the auto industry has recovered quickly and gradually returned to normal. In the second half of the year, China's auto industry will continue to develop steadily under the effective control of the domestic epidemic, and show the following development trends. (1) The domestic automobile market is steady and rising In the first half of the year, the domestic automobile industry grew more than expected, and the first quarter basically maintained the growth trend since the second half of 2020. In May, due to the chip shortage caused by the epidemic, the automobile production and sales declined slightly from the previous month and year-on-year. At present, the shortage of chips in China is mainly based on delays in chip production due to the impact of the epidemic, but it will gradually ease over time as chip manufacturers resume production and expand production capacity. At the same time, domestic vehicle enterprises have taken active measures to rationally arrange the production pace, adjust the stock cycle, increase the selection of suppliers, and optimize the supply chain layout. According to the Association, the problem of core shortage in the domestic auto industry is expected to be significantly improved by the end of the year. Given the good development trend in the first half of the year, the total sales growth of automobiles in 2021 is expected to be higher than 6.5%. (2) The high and low ends of the passenger car development The national economy will continue to recover steadily, domestic consumption will reinvigorate, low-end consumption of passenger vehicles will accelerate recovery, and high-end products will penetrate rapidly, and passenger vehicles will show high and low development. From January to May 2021, the market share of a-class and below sedans and SUVs is nearly 70%, which is the main force in the passenger car market. At the same time, c-class and above cars, year-on-year growth of 62.5%, the growth rate far exceeds the level of passenger car industry, huge development potential. In terms of new energy vehicles, its product structure presents a "dumbbell-shaped" distribution, that is, high-end models represented by Tesla, and economic models represented by Wuling Hongguang. Therefore, high and low - end passenger cars will still be the second half of the passenger car market is the main point of force. (3) New energy vehicles enter the growth period The domestic new energy vehicle industry has gone through a rapid start period, an overheated expansion period, and the clearance stage of subsidy regression. In the future, new energy vehicles will enter a high-speed growth period. New energy vehicle subsidies in 2021 are generally reduced by 20% compared with 2020. However, due to the reduction of battery production costs, which offset the impact of subsidy decline, the sales growth in the first half of the year exceeded expectations, objectively reflecting the real demand of the consumer market, and the development of new energy vehicle industry is gradually shifting from policy-driven to market-driven. At the same time, with the technological progress of new energy vehicles, the improvement of consumer recognition and the improvement of application scenarios, the new energy vehicle industry will be further promoted to enter the next stage of rapid development. According to the national Passenger Association forecast, in 2021 domestic sales of new energy passenger vehicles 2.2 million, new energy vehicle market may reach 2.5 million units.

Domestic new energy automobile industry has developed beyond expectations, with rapid growth of production and sales, and a strong development momentum of the industry. From January to May 2021, the production and sales of new energy vehicles completed 967,000 units and 950,000 units respectively, both increasing by 2.2 times compared with the same period last year, and the overall performance was better than the overall level of the industry. Compared with the same period in 2019, production and sales increased by 96.5 percent and 97.1 percent, respectively. By vehicle type, the production and sales of pure electric vehicles reached 818,000 and 794,000 units, up 2.6 times and 2.5 times year-on-year, respectively. The production and sales of plug-in hybrid electric vehicles reached 149,000 and 156,000 units, up 1.1 times and 1.3 times year-on-year, respectively. The production and sales of fuel cell vehicles were 188 and 207, down 47.3% and 44.1% year-on-year, respectively.

Asia, led by China, is the new center of the world automobile manufacturing. Its effective epidemic prevention and control has promoted the recovery of the regional automobile industry and is an important engine to pull the world automobile recovery. From January to May 2021, China, Japan, South Korea, India, Thailand and other Asian countries produced a total of 17.8737 million vehicles, up 45.9% year on year, more than half of the world's production. Among them, China's automobile production was 10.626 million units, up 36.4% year on year, more than 30% of the world's production, is the world's largest automobile production base. In terms of the recovery of the industry after the outbreak, auto production in Asia increased by 8.2 percent year-on-year, significantly higher than that in the Americas (-40.5 percent) and Western Europe (-43 percent).

The global auto industry is gradually recovering from the epidemic As the epidemic situation in some countries and regions slows down, the global auto industry is gradually recovering, but the overall industry level has not recovered to pre-epidemic level. From January to May 2021, the global automobile production and sales volume completed 30.59 million units and 33.801 million units respectively, with year-on-year growth of 20.6% and 31.6%. The global automobile industry showed a positive recovery after the full epidemic period. Compared with 2019, auto production and sales decreased by 21.9% and 8.1%, respectively. The chip shortage caused by the epidemic is still restricting global auto production, and the output recovery is lagging behind, while the auto consumer market is gradually recovering with the easing of the epidemic and the impact of the policies to boost the auto market in various countries.

The global new energy vehicle recovery momentum is strong, performing better than the auto industry as a whole, China took the lead in recovery and led the global new energy vehicle industry development. From January to May 2021, the global sales volume of new energy vehicles was 1.767 million, with a year-on-year growth of 152.2%. The growth rate was five times that of the entire automobile industry. The automobile market share increased from 2.2% in 2019 to 5.2% so far, showing a good momentum of industrial development. Among them, 950,000 new energy vehicles were sold in China, up 224.2% year on year, better than the global new energy sales level in the same period. The market sales accounted for more than half of the global new energy vehicle market, which is the main growth point of the global new energy vehicle market.

Guangzhong company participated in shenyang National Auto Parts Exhibition on May 12, 2021, with a booth area of 54 square meters, which attracted the eyes of domestic and foreign buyers, and actively communicated product information and problems, and achieved complete success