Finding overseas customers for veterinary active pharmaceutical ingredients requires certain market research and marketing strategies. Here are some possible methods:

1. Participate in international trade shows: Attending international trade shows in the veterinary industry can enhance brand visibility, establish an international business network, and provide an opportunity to interact directly with overseas customers to understand their needs and feedback.

2.Use internet search engines: You can find potential overseas customers for related veterinary products and ingredients via search engines, particularly popular ones like Google and Bing. You can then proactively reach out to them.

3.Leverage B2B platforms: B2B platforms such as Alibaba are professional industry websites that provide international trade information for veterinary products and raw materials. You can register and post product information to attract the attention of overseas customers.

4.Seek local agents: Consider finding local veterinary drug agents or traders to contact overseas customers and establish long-term cooperation.

5.Establish social media and email marketing: You can use social media platforms like LinkedIn, Twitter, and email marketing campaigns to expand the influence and recognition of your business.

6.Join trade group organizations: Consider participating in trade group organizations for the export of veterinary products and raw materials, such as international trade exhibitions and import buyer exhibitions, to showcase your products and company image to overseas customers.

These are some possible methods, but it's advisable to create targeted marketing strategies based on your company's situation and product characteristics, in conjunction with market demand. Also, when conducting international trade, understand cultural differences and local regulations, and maintain good business reputation and service quality.