Let's talk about joint venture brands first. (It may be a regional problem, but some of them are out of reach) Caterpillar: a big American manufacturer, the world's biggest excavator, with strong performance. Advantages: sufficient strength, durability, firmness, not easy to break, and high preservation rate of old machines. Mine engineering is the first choice. Disadvantages: high price, high fuel consumption, especially for mining models, high fuel consumption and general after-sales service. 20T model: reference price: cat320dgc97-100w 320d10-15w Komatsu: Japanese manufacturer, leading excavator industry, with high total cost performance. Advantages: good strength, high speed, strong and durable, not easy to break, and good value preservation. Earthwork is preferred. Disadvantages: high price, high oil consumption, unsuitable for mining and expensive accessories. After-sales service is average. 20t model: reference price pc200-897pc200-897-100w pc200-8-8 hybrid1kloc-0/18w Hitachi: a Japanese manufacturer, the sales of excavators are also very large, which is generally acceptable. Advantages: general mechanical matching, general hydraulic system, flexible action, general durability, general value preservation, general use cost, general fuel consumption, moderate strength, and the price is about 30,000-50,000 cheaper than Komatsu. Disadvantages: it is not durable, and there are many problems after two or three years, mainly due to high water temperature or hydraulic system problems. Now there are four engines in Unit 20, which only increases the shortage of strength and reduces the displacement, so I dare not use it. 20T model ZX200-3G reference price 95-98W Kobelco: Japanese manufacturer, the sales volume is relatively large, generally acceptable. Advantages; Low down payment, fuel saving. Nice color. Disadvantages; Not strong and durable, the quality of the four-cylinder engine is very poor after overhaul, so we can only do earthwork, because there is no strength, and the patchwork things are definitely not easy to use. 20T model 2 10LC-8(Super8) Reference price 97-102wVolvo: Good brand, large sales volume, good reputation and good overall. Advantages: good safety performance and luxury. Fuel-saving, fast and good value preservation. Disadvantages: Volvo's new machine can be used, but it is seriously localized, fragile and not thick enough. 20T model EC2 10B Reference price 100- 106W Doosan: China has a high market share and moderate synthesis, and imported machines are low-grade products. Advantages: low price, low fuel consumption of 8 series. All kinds of projects are ok. Disadvantages: Low price leads to inferior product quality, moderate price, average quality and poor after-sales. Low degree of preservation. 20T model DH2 15-9 Reference price 80-85W DH225-9 86-9 1W Hyundai: According to the region, it is said that Jiangsu sells well, but it is really low-grade goods. Advantages: the price is relatively cheap, and the accessories are easy to buy and cheap. Disadvantages: the machine can't even reach the level of domestic machines, no matter how good or bad. Personal opinion: Imported brands can only buy the above brands, such as Keyes, Kato, Terex, Li Boer, Sumitomo and Ishikawa Island, but they can't. They have low occupancy rate and few after-sales service points, so it is difficult to buy accessories. If you buy them, these problems will always appear. The comprehensive ability of the following domestic machines is much worse than that of imported brands. But it was graded. The first gear: Sany Heavy Industry, Liugong, He Shan Intelligent and Yuchai. Second stalls: Xugong, Zoomlion, Xuwa, Longgong, Gong Lin, Ward, Shantui and Luxor. Finally: Zhanyang Power, Jin Woo, Rhino, Chang Lin, Open Source.