im demat account you can open account through any broker before open a account you should know what brokerage they will charge on you share transaction.
A service provider is any organisation that provides goods, facilities or services to the public, whether paid for or free, no matter how large or small the organisation is.
Oh
I'm about to open a Demat Ac & Online trading Ac with Zerodha.com, IL&FS securities ( www.ilfsdp.com ) provide demat services for the customers of zerodha.com. I never heard about that Demat service provider. I heard motilal oswal, icici direct, religare and so on, Now i want to know that will there be any quality difference between demat ac service providers??