The question that comes back most often is not about the product. It is about us: why buy from a trading company when the factory is cheaper? It is a fair question and the answer is not that we are always cheaper, because we are not. The answer is that a factory and a trading company are not two versions of the same thing, and the shape of the order in front of you is what decides which one you want.
For a buyer and a seller the same sentence holds: bigger is not automatically better, fit is. A one-product order in volume belongs with the factory. A basket of products, or a product no factory in the network makes, belongs with a trading company. An order that needs stock held in your country and credit extended belongs with a large enterprise - and we will tell you that, because we cannot carry that risk ourselves.
Two of the pieces below are about what a trading company is not good for, and one of them is about a service that is deliberately not on this page. The point of writing them is that they are more useful than a page that only says the good things.