When looking around for a wholesalers insurance quote, you really need to have certain information to hand to make this process as smooth as possible. Financial information about the company, such as estimated turnover, wages and gross profit are a minimum.
When you look at the different elements of cover provided by the policy, there are certain questions that you will be asked. One of these relates to the actual products that you are wholesaling. Here in the UK, it does not matter where you bought the products from. If I purchase from you, this is the financial relationship that is governed by English or Scottish Law.
If there is an injury or damage caused, then I am entitled to make a claim under your product liability insurance. Your insurers, if a valid claim, can choose to pursue settlement against the insurers of the original manufacturers, but your policy will pay out first.
So, insurers want to know where you import from. If you buy within the EU this is good, as a potential claim is easier to pursue than if you import from the Far East. This is not saying that there is a difference in the quality, simply that the legal costs (for your insurers) in pursuing a claim are cheaper within the UK/EU than outwith.
So, you need to declare to your commercial insurer exactly where you are sourcing the products from. Some policy wordings need to have separate clauses added noting if imports are received from outwith EU. Certain, smaller, underwriters simply do not have the capabilities to underwrite these types of products and you are more suited to arranging a policy with a different capacity provider.

