Heating Plate import companies and heating plate import trade opportunities

We are looking for suppliers from Turkey. It is planned to produce rubber goods parts: Cuffs DN150. Part drawing in attachment; Size of heating plates 600x400mm Fuel tank gasket 5320-3827013, Size 70x42x2 (Word document); The size of the heating plates is 600x400mm. Technical plates 500x500x(2, 3, 5), more precise size of plates when concluding a contract The size of the heating plates is 650x650mm. We plan to produce plates with a thickness of 2, 3, 5 mm so that they are interchangeable and can be connected together. (Approximate sketch of technical plates) Please consider the possibility of making molds for these parts. And decide on an approximate cost. Place the number of parts on one mold; Material steel 45 or 40Х (maybe you can suggest the material yourself?) Mounting plates must be at least 20mm thick