The method of Kang and Liu

Our method

Resource

Quantity

Price

Cost

Resource

Quantity

Price

Cost

Salt

0.15 - 0.33 t

48.6/t

7.29 - 16.04

Salt

0.10 - 0.12

48.6 $/t

4.86 - 5.83

bluing agent

0.08 - 0.15 kg

60.8/kg

4.86 - 9.12

Electricity

0.85 - 1.7 kwh

0.12/kwh

0.10 - 0.20

scenting agent

0.03 - 0.05 kg

91.1/kg

2.73 - 4.55

Total

14.88 - 29.71

Total

4.96 - 6.03