• A reliable factory for custom aluminum extrusions, machining parts and assembled products
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    A reliable factory for custom aluminum extrusions, machining parts and assembled products

    PatentS

    Golden Source was awarded with 60 patents of invention and 20 appearance patents. Our patents are specially applicable to electric railways, including railways with 250km/h and 350km/h speed, new generation China metro lines with over 100km to 120km/h speed.