Plastic Injection Molding & Die-Mold Machining | Wilco plastic injection molding, die mold machining, custom automation, molding, tool design, plastic injection Nobody else does it like Wilco - We offer ISO class 8 clean rooms for both molding and assembly along with everything from tooling, automation, designing, engineering, prototyping, and final assembly. In addition to our plastic injection molding services, we do many secondary processes such as hot-stamping, sonic welding, sub-assemblies, and more!