ACQ is a kind of water-soluble wood preservative that integrated by copper and quaternary ammonium salt. Based on the rising requirements of the Environmental Protection, it has replaced CCA and become the mainstream of the wood preservatives. The difference between ACQ and CCA lies in that ACQ contains no harmful substances (such as arsenic, Cr that contained in CCA). In Japan, United States and European countries, it is ban to use such as CCA Wood preservative and related wood.

　　The copper and quaternary ammonium contained in CCA can effectively inhibit and kill the fungi, termites and borers. It can hang together with wood fiber solidly and cannot easily to loss. It plays a long-term protection for timbers. The usage span can reach more than 40 years. As for Australia standards, it can be used against H5 timber grading; through the CCA-treated wood can be used in fresh water. In the H5 Required Environment, there exists serious decadent and moth-eaten situation.

　　ACQ wood preservation applies to the various environments such as indoor and external grounding. It has been widely used in: wooden house, outdoor furniture, wooden trestle, paths, wood flooring, fencing, recreational facilities, stairs, walkways, docks, swimming pools, and the various types of horticulture materials.

　　The treated wood turns out light green, and slowly become warm brown after used for a period of time, and without effect on painting and coloring. The worker is no need of special protection, and the pieces can be used as daily garbage.

　　 The timber treated by ACQ can meet the timber protection treatment as well as environmental protection requirement. In the use of CCA-treated wood into living environment, we can shake off the cold from steel and cement. More close to the nature and enjoy a high quality and healthy life.