FPCP unit cost (USD/kg) Annual cost of FPCP (USD) Annual cost of enzymes (USD) Percentage of FPCP cost in raw materials cost Percentage of enzyme cost in raw materials cost Percentage of raw materials cost in operation cost 3.00 11,355,431 104,127 98.55% 0.91% 78.03% 2.00 7,557,003 104,127 97.97% 1.35% 70.45% 1.00 3,778,502 104,127 96.03% 2.65% 54.88% 0 0 104,127 0% 66.61% 4.61%

Table 7: Percentage of purchase cost of FPCP enzyme in raw materials cost and percentage of raw material cost in total operation cost, with different purchase cost of FPCP.