Solar lighting lamps and lanterns exemption: solar lighting is a one-time input, without any maintenance costs, three years can recover the investment cost, long-term benefit.
The duration of the project was calculated in such a way as to enable the operator to recoup the investment and ensure a return in the amount freely set in the project agreement.
Profit estimate includes ore grade, product, price, annual output, total income, total cost, profit before tax, comprehensive estimation(time of recovering the investment).
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