Second-hand Cat excavators, one of the key indicators for measuring the value of second-hand equipment investments, have been receiving attention in the engineering machinery market.Caterpillar, a world-renowned manufacturer of engineering machinery, produces excavators that are fairly stable and high in second-hand markets owing to their excellent quality and durability.First, it should be clear that the second-hand Cat excavator is not a fixed value and will be affected by a number of factors, including, but not limited to, the original year of purchase of the excavator, the number of hours used, the maintenance condition, the history of repair, market demand and the volatility of the price of the new one.In general, a well-maintained second-hand Cat excavator with a moderate number of working hours and no record of major accidents could have a premium of about 60-80 per cent of the original purchase price, and specific data would need to be accurately assessed on a case-by-case basis.In order to obtain an accurate picture of the retention rate of the second-hand Cat excavator, users are advised to consult with the professional second-hand equipment evaluation platform prior to purchase or to contact the distributor directly to obtain up-to-date market quoted information.In summary, the preservation rate of the second-hand Cat excavator reflects its brand power and market recognition of the value of its products, and it is important that second-hand equipment be purchased with a combination of factors to ensure that returns on investment are maximized.