Service tax query

Dear Sir / Madam,

We had started a factory in Howrah for manufacturing of Plastic
containers of different sizes. We take carriage outward charges from
the party for delivering the goods. We also paid amount towards
transport services to agent towards supply of goods. Suppose we charge
Rs. 1000 from the party and we arer paying Rs. 850 to the transport
agent and the remaining Rs. 150 was shown as indirect income. We also
received printing charges bills from the party for printing logos and
other items on plastic containers. We also recieved labour charges
bill for other works. So what type of services are chargeable to us.
Shoild we available cenvat credit on that services. Also what will be
consequences for the period 01.04.2012 to 30.06.2012 and thereafter?

Kindly provide the details regading service tax applicability and what
type of serivces are chargeable to tax on the basis of reverse
mechanism?

Waiting for your reply?