Daimler-Chrysler (hereinafter referred to as Dai-ke), which has successively “broken up†with South Korea’s Hyundai and Japan’s Mitsubishi Motors, is making its full-scale growth after its “slimming†business in China. The reporter learned yesterday from Dai-Ke China that in the first half of 2004, Dai Ke's sedan sales in China increased by 173%, setting a new record with 22,200 sales. Daie-Ke expects total car sales to increase by 75 in 2004. %. The competitor BMW Group recently announced that its mainland business only increased by 55% in the first half of the year. “Dai-ke's business has grown by leaps and bounds in the Chinese market with huge growth potential. Its Beijing Jeep, which is a joint venture with Beijing Automotive, has also achieved excellent results,†said Dai Ke of China in yesterday’s announcement. This report shows that in the first six months, DaimlerChrysler's Mercedes-Benz sedan sales growth was significantly higher than the overall market. As of the end of June 2004, sales of the Mercedes-Benz sedan were 5,500, an increase of 70% compared to the same period in 2003. Moreover, thanks to a significant increase in the sales of all product lines, especially in the luxury car segment, the S-Class has further expanded its market leadership. “In the first half of 2004, the sales of S-Class sedan increased by 40% to 3,500 units, accounting for about 2/3 of the sales volume of Mercedes-Benz sedan in China. The sales of E-Class sedan increased to 1300 to 170%. The growth rate is particularly prominent,†said Dai Li-Ping China PR Li Liping in an interview with reporters yesterday. Dai-ke China also reiterated yesterday that in order to further develop in the growing Chinese market, Dai-ke and Beiqi Holding plan to produce Mercedes-Benz C-class and E-class sedan, with a mid-term goal of producing 25,000 vehicles a year. In addition, in the second half of this year, Dai-k's top luxury car Maybach showroom will also be officially opened in Beijing, Shanghai and Guangzhou. Li Liping also disclosed to reporters that Dai Ke's joint venture in China, Beijing Jeep Motors Co., Ltd. sold 16,700 Slo, Jeep and Mitsubishi brand cars in the first half of the year, an increase of 240% compared with the same period last year. Dai-Ke is extremely satisfied with his Chinese partner. Mr. Feo Mingming, Chairman and Chief Executive Officer of Dai-Ke (China) Investment Co., Ltd., said: "The success of our current product line in the market and the good development prospects in the second half of this year clearly show that Beijing Jeep Motor Co., Ltd. The operating conditions have improved and laid the foundation for further major developments.†Industry insiders have analyzed that after the former allies Mitsubishi and Hyundai gradually “faded out†of the Dai-Ke Asian strategy, the rapid rise of the domestic Beijing Automotive Group is increasingly becoming With emphasis on the Asian strategy and "new allies," both sides will soon carry out comprehensive strategic cooperation in commercial vehicles and passenger vehicles. The "Diamonds" after the Dai Ke Group's territory in China is clearly becoming clearer, and this is becoming the key to the "Reduce the burden" of the Dai Ke Group, which is a light-hearted, all-round improvement in China's performance. (Wang Liang)
Relying on its own air distribution system, the compressed air enters the front and rear air chambers of the piston (hammer) alternately, so that the piston reciprocates continuously. The alloy ball teeth break the rock. According to the structural characteristics of the gas distribution system, the DTH hammer is divided into two types: valve type and valveless type. (1) DTH hammer with valve. The air flow is controlled by the valve plate, and can be divided into side exhaust and central exhaust according to the exhaust mode. The side-exhaust valve DTH hammer is the earliest used, and its exhaust gas is discharged from the side of the hammer head. The exhaust gas of the central exhaust valve DTH hammer is discharged from the central hole of the hammer head. In comparison, the effect of removing cuttings by the central exhaust method is good, the service life of the hammer head is long, and the drilling efficiency is high. (2) Valveless DTH hammer. There is no valve plate, and its gas distribution system consists of a group of holes arranged on the cylinder wall, which automatically distributes gas during the movement of the piston. In the total stroke of the piston movement, one section relies on the expansion of compressed air to do work. Under the same pressure conditions, the consumption of compressed air is only 2/3 of that of the valved DTH hammer. According to the working pressure, the DTH hammer is divided into low pressure DTH hammer (0.5~0.7MPa), medium pressure DTH hammer (0.56~1.05MPa) and high pressure DTH hammer (0.56~2.46MPa), which are suitable for different working conditions.
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