Asset valuation cost method equipment valuation

These three are precisely because it does not matter so respectively depreciation of ah, my understanding is this: 1 entity is the equipment due to wear and tear in the operation and exposure to the natural environment erosion, resulting in the loss of the physical form of the equipment, caused by the depreciation; 2 functional depreciation of the equipment is the advancement of new technologies caused by the technology is obviously backward, the performance of the lowering of the functional depreciation of the resulting formation; 3 economic depreciation by the Economic depreciation is caused by the impact of the economic environment, policies or other factors other than the equipment itself, this may require you to find or analyze the relevant policies and external environment. If you are doing the assessment remember the assessment of the depreciation and accounting depreciation is not the same, you can go to Baidu library to search for equipment new rate. Hope to adopt