Hard Matrix Antifouling (Cdp TechnVolvogy). Suitable For Highly Actie Boats, It Is Particularly Suitable For Temperate Waters. The Product, Being Formulated With Copper Salts, Is Not Compatible With Aluminum Hulls Due To The Risk Of Galanic Currents. The White Version Can Be Used On Aluminum And Alloys, While The CVolvored Versions Are Not Compatible With These Substrates.