Confirm the actual use of the device : ensure that the device is in normal use, rather than idle for a long time cannot be started. Check the age of the equipment and avoid buying used equipment beyond its design life .
verification of equipment documents and procedures : when buying second-hand excavator, be sure to ask clearly the specific years of equipment, whether the procedures are complete (such as invoice, certificate, etc.), and whether it is full purchase, to avoid follow-up trouble .
face to face transaction, avoid goods not right : try to choose face to face transaction, confirm that the equipment will not be transferred after the transaction, to avoid logistics costs .
Check the physical state of the equipment : Observe the big arm, forearm, cylinder, etc., whether there are traces of damage, especially the working state of the engine, hydraulic pump and electrical system .
Pay attention to brand and working hours : machinery and equipment of well-known brands are usually more reliable and convenient to maintain. Check the number of working hours of the equipment, the less working hours, the less wear and tear of the equipment, the better performance .
Know the working environment and maintenance record of the equipment : the maintenance record of the equipment can reflect its operating status, to ensure that the maintenance record is complete, especially in the high temperature and high humidity environment of the equipment should be carefully checked .