Where I can find the Customized Printed T-shirts Manufacturers in India?

Well, I would say make a good search before you finalize one. There are many manufacturers in India. However, it is best to go for well-established ones as they know what the customer wants. And after a lot of searches, I found one company that does the work at an impeccable range. Eastman exports are one of the leading Apparel manufacturers in india specializing in producing knitwear, high-end apparel and accessories of the highest quality to high-end global fashion brands and boutiques across the globe. 

They do good prints. Their website link is: http://www.eastmanexports.com/