Shoulder and neck master cold compress gel is an official "mechanical name" product filed by the US Food and Drug Administration. It is safer for special people to use. The "machine name" must be produced in strict accordance with the national medical device standards, and it is not allowed to add any hormones/antibiotics/heavy metals/ingredients that may easily cause skin allergies.

In terms of product requirements for production conditions, "mechanical brand name" is stricter than "cosmetic, consumer and health care brand name", and the production workshop must have a special purification vehicle with the lowest level of100000. It must also pass the special system certification of medical devices, and accept the supervision of the production quality management norms of medical devices and the third-party production environment testing report. Pharmacies and hospitals sell them, and some of them can be reimbursed by medical insurance.