Why the price will be cheaper when you choose to direct cooperation with China shipping forwarder?

Cheaper will be the most important reason as the same as you choose products in China. The lower labor cost, lower exchange rate, lower expenses and other factors, make China shipping forwarders’ charge much more competitive, not only the shipping rates, but also other handling expenses.
The situation here permits them to work out the best pricing on the basis of your specific logistics demands. And this translates to bigger profit margins for purchase makers, or can be able to sell at more competitive prices.
Please be noted that most international freight forwarders with operations in China will resort to a local logistics or forwarding company because of their lower costs and local knowledge, which implies the shipping agents in your country cannot handle China shipments directly.