Double-Layer Aluminum PCB Design

I’m building a new industrial controller and need a reliable double-layer PCB laid out on an aluminum core. Thermal performance and mechanical durability are priorities, so please keep trace widths, spacing, and copper weight appropriate for sustained factory-floor use and frequent load cycles... (Budget: €30 - €250 EUR, Jobs: CAD/CAM, Circuit Design, DFM (Design for Manufacturing), Electrical Engineering, Electronics, Mechanical Engineering, PCB Layout, Product Design)