Huawen® functional resins contain varying levels of reactive groups, such as maleic anhydride and glycidyl methacrylate, significantly enhancing adhesion between resins, resins and metal materials, and resins and non-metal materials. For example, SMA resins can be used synergistically with water-based adhesives as adhesives for plastic bottle labels. PE grafted maleic anhydride is widely used in composite pipes, oil and gas pipelines, multilayer packaging, and aluminum-plastic panels. SEBS grafted maleic anhydride can be employed as overmolding materials for power tool handles.