How can I find third-party manufacturers for pharmaceutical products? 1. Select the pharmaceutical division for third party manufacturing Consider your preferred method of sales and marketing first. For example, which pharmaceutical subcategories would you like to focus on first? Talk to the sales and marketing staff of a third-party manufacturer, list it on Google, and identify your target market. Once you have mastered your touch, you will have access to their policies, procedures, and systems. They will guide you and give you the necessary tools. Companies that engage in direct manufacturing also require your skills.