Global Automotive Gearbox Market By Type (By Number of Gears , 3?5 , 6?8 , Above 8 , By Transmission Type , Automatic Transmission (AT) , Automated Manual Transmission (AMT) , Dual Clutch Transmission (DCT) , and Manual Transmission), By Application (Passenger Cars , LCVs , Trucks , and Buses ), By Region, and Key Companies - Industry Segment Outlook, Market Assessment, Competition Scenario, Trends and Forecast 2020-2029