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Water Management

Medium-term target Waterconsumption per unit of product until 2023 keepsnot higher than 150 L/Layer; and total water recycling rateuntil 2023keepsnot lower than 80%.
2020 target Waterconsumption per unit of product isnot higher than 150 L/Layer; and total water recycling rate is not lower than 80%.
2020 achievement Waterconsumption per unit of product is148 L/Layer; and total water recycling rate is 81%.

We establish a design for water supply and reclaim pipeline system; implement a 24-hour all-time control and monitoring system to monitor water use across the plant; renew water-saving plans annually and review effectiveness regularly.

Winbond has an on-site wastewater treatment area responsible for the treatment of general acidic andalkaline wastewater, fluoridated wastewater, wafer planarization wastewater, ammonia nitrogen wastewater,tetramethylammonium hydroxide wastewater, copper wastewater, and hydrogen peroxide wastewatergenerated during the wafer manufacturing process, as well as domestic wastewater generated by employees.These are passed through a membrane bio-reactor before being discharged into the CTSP Sewage TreatmentPlant. Once the wastewater has been treated to discharge standards it is discharged.

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