Global Automotive Gear Market Assessment, By Product Type [Spur Gear, Helical Gears, Miter Gears, Bevel Gears, Worm Gears, Others], By Material Type [Steel, Plastic, Aluminum, Powered Metal, Wood, Others], By Vehicle Type [Commercial Vehicles, Passenger Vehicles], By Application [Differential, Transmission System, Transfer Case, Steering Systems, Others], By Region, Opportunities and Forecast, 2017-2031F