Profile: Naylor Specialist Plastics formerly Rateoval Ltd. specializes in providing plastic product. We manufacture all types of extruded thermoplastic profiles. We also specialize in making tubing and pipes works. Our in-house tool making capability produce and modify tooling services. We provide rapid production of prototypes. We manufacture concrete lintels providing the construction and civil engineering industry with a complete solution to all building problems. We offer a wide range of lintels, fire specification, curved on plan, curved on elevation together with any other concrete product.