200 mm-wafer factory：

• The hazardous waste generated of unit foundry wafer products is 0.0050 Kg/cm² in 2021, down 11.61% compare with 2020.
• The overall waste recycling rate is 93.51% in 2021, up 1.60% compare with 2020.
• Total resource waste fee is NT$1,897,657 in 2021, up 42.93% compare with 2020.
• The total waste generated is 4,703 Ton (excluding resource recovery) in 2021, down 1.71% compare with 2020.

300 mm-wafer factory：

• The hazardous waste generated of unit foundry wafer products is 0.0049 Kg/cm² in 2021, up 0.02% compare with 2020.
• The overall waste recycling rate is 90.41% in 2021, up 2.65% compare with 2020.
• Total resource waste fee is NT$12,140,103 in 2021, up 15.68% compare with 2020.
• The total waste generated is 13,085 Ton (excluding resource recovery) in 2021, up 5.55% compare with 2020.