Raw Materials
Unimicron always aims to provide high-quality and environmentally friendly products to our customers around the world. Our procurement philosophy for raw materials is also mainly based on environmental friendliness. The three major raw materials used for product production are Substrates, Potassium Gold Cyanide, and Prepreg. The usage in 2022 was about 2.531 million sheets/13.10 million PNL, 2,961 kg, and 197,000 rolls/2.703 million PNL, respectively.
Main Raw Material
Note: There are two units for Substrate and Prepreg to measure, which cannot be calculated together and are presented separately.
Circular Economy and Sustainability
With the rising awareness of global environmental protection, Unimicron recognizes that it has been entrusted with the mission of reducing waste and mining while creating the value of circular economy. Since 2018, the Carrier SBU continued to use recycled trays, and in 2021, the PCB SBU used gold salts made from recycled gold in Shanying Plant.
Recycled Tray
We are committed to recycling packaging materials and have been recognized by Carrier SBU’s customers. We give priority to purchasing the reused trays and request suppliers to recycle the trays shipped to customers for reuse. In 2022, the use of recycled carriers will decrease by 21% compared to 2021, mainly due to the increase in precision of customers' products, and for quality consideration, customers require the use of new Tray to reduce the risk of quality abnormalities.
（Unit: %）
Recycled Potassium Gold Cyanide
In 2022, we launched the use of Potassium Gold Cyanide made from 100% recycled Gold in the PCB SBU Shanying Plant and Luzhu Plant, in addition, the supplier recycles and refines the waste liquid which will be provided to Unimicron to achieve a circular economy. In 2022, 16% of purchases of Potassium Gold Cyanide in Taiwan.
