Purchase manager details for Brass Component companies

I am looking for a freelancer to provide me with purchase manager contact details for medium-sized and corporate large companies in the brass components market. Specifically, I am looking for contacts from companies dealing in precision BRASS COMPONENTS that are located all over the world. The purchase manager should be able to source the necessary brass components for my company. As this is an important role, I want someone who is reliable, trustworthy and has demonstrated expertise in sourcing brass components for their previous clients. I am looking for someone who is continuously monitoring the market and is aware of any changes and new developments in the brass component industry. The successful freelancer will have to provide extensive and ongoing research into potential purchase managers so that I can approach them with confidence. The project requires an extensive report outlining all the information found and I expect the research performed to be of the highest quality.