What do you mean by Push and Pull Strategy?

Basically it is a promotional Startegy.

Push makes use of a company's sales force and trade 
promotion activities to create consumer demand for a 
product. where Pull startegy is to sell directly to the 
consumer.

In Push strategy the products has to be promoted by 
Producer to Wholesalers to Retailers to Consumer.

In Pull Strategy we have to use the toold like Consumer 
Promotions , advertising etc.