1. Search through the Internet: You can use search engines, such as Baidu and Google. , and enter relevant keywords, such as "Telephone number of farmers selling veterinary drugs by telephone", to find relevant information.
2. Consult the local veterinary drug dealer: You can call the local veterinary drug dealer to consult the contact information of the farmers who sell veterinary drugs by telephone. They usually have cooperative relations with farmers and may have contact information of farmers.
3. Farmers' Association or Breeding Forum: You can find the relevant contact information by looking up the local farmers' association or breeding forum. These organizations usually own farmers' information resources.
4. Ask other farmers: If you know other farmers, you can ask them the telephone number of the farmers who sell veterinary drugs by telephone.
It should be noted that when conducting telemarketing, we should abide by relevant laws and regulations and market rules, respect the rights and interests of farmers, and ensure that the veterinary drugs and services provided are legal, safe and reliable.