1, product certificate: beauty instruments need to meet environmental protection and safety standards, so they need to obtain corresponding product certificates.

2. Special equipment use certificate: If beauty instruments belong to the category of special equipment, such as laser instruments and ultrasonic instruments, you need to obtain a special equipment use certificate.

3. Business license or practice license: beauty salons need to have corresponding business licenses or practice licenses to prove that they meet industry standards and regulatory requirements before they can purchase and use beauty instruments.

4. Practice license of medical institutions: beauty salons that provide medical beauty services, such as injection beauty and surgical beauty, need to obtain a practice license of medical institutions or cooperate with regular medical institutions.