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How is Zhang Zhongjing's Herbal Health Preservation appraised?
Zhang Zhongjing's herbal health appraisal method is as follows:

1. Formula identification: Every herbal formula contained in Zhang Zhongjing's herbal health care has been certified by an authoritative organization, and the dosage of each ingredient needs to be clear and not exceed the national regulations.

2. Identification of packaging logo: The regular Zhang Zhongjing herbal health care packaging barrel is well sealed, with anti-counterfeiting logo, batch number, production date, expiration date and other information.