By the late 1980s, China's excavator production plant has more than 30 production models of more than 40 species. Medium and small hydraulic excavators has formed a series, bucket capacity 0.1 to 2.5 m3, 12 levels, 20 kinds of models, domestic second-hand excavator sales, production of 0.5-4. Cubic meters and 10 cubic meters of large mining, 12 m3 shovels mechanical transmission, one cubic meter tunnel excavator, backhoe 4 m3, 1000 m3 / h of dump machines, has also developed a bucket capacity of 0.25 m3 of marine hydraulic excavators, bucket capacity of 0.4 m3, 0.6 m3, 0.8m3 amphibious excavator. But overall, China's excavator production volume is small, decentralized, domestic second-hand excavator market, production processes and product quality compared with the international advanced level, there is a big gap. Good hydraulic oil cooling system (or rather should the hydraulic oil temperature control system) to improve domestic second-hand digging machine, although the specific manner of different manufacturers using a large hydraulic excavator for hydraulic oil cooling system, but the basic idea is the same, both the hydraulic oil temperature in continuous operation in the balance in the ideal range, but also make the hydraulic system in the cold state can be quickly put to work when heating (oil reaches normal operating temperature range). In the case of a qualified hydraulic oil under the premise, when there is overheating hydraulic oil, hydraulic oil cooling temperature control system checks in domestic second-hand excavator, used excavators Kim Ho, domestic second-hand excavator price from Shanghai Jin Hao Used Construction Machinery Co. company. Domestic second-hand excavator, used excavators Kim Ho, domestic second-hand excavator price is Shanghai Jin Hao Used Construction Machinery Co. (www.jinhaosh.cn) this year introduced a new upgrade, the above picture is for reference only, please call or pictures on this page contact telephone number, to obtain the latest information, contact: Mr. Chairman.