1. Professional guarantee institutions: find professional guarantee institutions in Shiyan area and ask them whether they provide guarantee services and meet the demand. Guarantee institutions will provide more specialized services for specific fields or industries, and they can choose suitable institutions according to their own needs.
2. Law firm: Contact the law firm in Shiyan area to consult whether to provide guarantee services or help find a suitable guarantor. Legal knowledge and resources of all majors can provide them with some help and guidance.