[Jer-Den Plastics – Plastic Rotational Molding – Detroit – Midwest – United States – Under Construction Jer-Den Plastics has over 30 years of plastics processing experience, providing high-quality rotational molding for the construction, commercial, industrial, material handling, marine, toy, and recreational vehicle industries. We also offer a host of secondary in-house services, including routing, flame treating, foam filling, spin welding, and hardware installation, in order to offer our valued customers rapid, cost-effective, "one-stop" manufacturing. And, our central location in the Midwest U]