Fish Friendly Our new circuit boards use lead-free solder to be RoHS compliant. We accept used parts from you and properly dispose of them to save you the hassle. We have recycled over 8 tons of copper, aluminum & other metals since 2006. We have kept more than a ton of plastic materials out of waterways everywhere. Over 75% of our product packaging is made from recycled materials. To participate in our program, send in your used and/or old parts to CDI Electronics and we’ll handle the rest.