At present, preservatives mainly include CCA, ACQ and CAB. The main component of CCA is copper arsenic, the main component of ACQ is ammonia-soluble alkylamine copper, and the main component of CAB is copper ruthenium. Anti-corrosion wood determines the amount of preservative according to the conditions of use, depending on the recently issued national standard "preservative wood". In the past few decades, wood preservative treatment methods have mainly been based on CCA. Its main chemical composition is Chromated Copper Aarsenate, which is clean, odorless and can be painted on the surface of treated wood. High-quality CCA agents have very stable properties and their excellent corrosion resistance makes them widely used. Long-term experience tells us that CCA-treated wood can be used in a variety of harsh outdoor environments and is an ideal chemical preservative for wood protection. Due to the extremely small amount of arsenic in CCA, people have recently been psychologically worried about the health hazard. Since January 1, 2004, the United States has stopped using CCA-treated wood (except for industrial and special environments). At the same time, the authoritative organization of the United States has clearly stated that "there is no scientific evidence to prove the harm of CCA to human health. The industry standard for anti-corrosion wood application to be announced in China clearly defines that CCA is one of the applicable antiseptic agents. The main chemical component of ACQ (Alkaline Copper Quaternary) is an alkyl copper ammonium compound. It does not contain chemicals such as arsenic and chromium, and has no adverse effects on the environment, and will not cause harm to humans, animals, fish and plants. This treatment method is considered to be an effective substitute for CCA, but experiments have shown that ACQ is not as stable as CCA and is relatively easy to lose. The current cost is also nearly 20% higher than CCA. Therefore, from the domestic market, the preservative wood of these two treatment methods should coexist for some time. With the continuous improvement of related technologies, ACQ will become one of the main methods for future anti-corrosion wood treatment in the long run. Professional Lighting ,Pro Lighting,Professional Outdoor Lighting,Professional Led Light NINGBO LONGFLIGHT INTELLIGENT TECHNOLOGY CO.,LTD , https://www.long-flight.com