For each product, there are several options of raw materials that can be used. Material selection will be done based on needed features of the product, together with target price of the final product in mass production.
This stage is normally done outside of China, but depending on your request and needs, we can work on this together with the factories.
In many cases, there will be a need for few stages of proto-type building. This process is handled carefully, by our project managers, working hand-to-hand with the manufacturers.