To search for drop shippers specifically, click on the 'Directory' link at the top of the page. Beneath the 'Directory' link, on the red menu (second row), you will see a 'Dropshipper' link. Click this and select the category for the product you're interested in (ie. Clothing & Fashion). Choose 'China' from the 'Show suppliers from:' drop down menu.
Alternatively, you can use the 'Search' box, again at the top of the page. Just enter the product/brand you wish to find suppliers for and then click on 'Search'. To narrow down your search result, you can set the supplier location, category and type. You can also tick 'Ships Internationally' to find suppliers that deliver worldwide.
When you get to the product search results page, click the Visit Website link, this is just below the name of the supplier. Or, you can click on the supplier's website URL to be taken to the supplier's webpage.
Try contacting the suppliers first please. The best prices are never listed on the wholesalers' website. Most suppliers will often tailor their prices to your order. Someone ordering 20 items will get a much better unit price than someone ordering just 10, for example. Note that suppliers will also negotiate better prices with sellers that they have a good relationship with. You can send them an email asking what the best possible price is that they can give you for the products you wish to buy.
All the best!