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thanks to the chemicals it is treated with. While these chemicals, which nowadays are usually alkaline copper quaternary (ACQ), copper azole (CA), copper-HDO, or copper naphthenate, help the wood ...
Modern pressure-treated wood treaters use alternative solutions, primarily Micronized Copper Azole (MCA), and prior to 2020, Alkaline copper quaternary (ACQ). "Today, Copper Azole is used for ...