I read the last post done by u.. As am new to this field I want more specific explanation about the categories of shares of the company. If u can do so it will be great.. And also what do u mean by suspended lot of shares.. Does it mean we should not purchase 'Z' group shares..

Please clarify your question

OK let me ask one by one.. please explain on what basis the shares are classified as 'A' or 'B' or 'Z' or etc etc..

Any basis the company likes. It may be related to voting rights or dividend rights, etc. You need to check the specific company.

And if you want to refer to the "last post by you," it would be nice to know who "you" is, and which post -- the last post doesn't stay the last post when new posts are being added. If you reference something, put a link to it or something.