Well, Huang Daoyi Collateral Oil sold by major domestic pharmacies is produced in Guizhou, which belongs to China Huang Daoyi Pharmaceutical Co., Ltd., and it is legal and compliant.

Huang Daoyi Collateral Oil from Hongkong is not allowed to be put on the shelves in domestic pharmacies.

the use effect is actually the same, because they are all made in Huang Daoyi, but the production areas are different. You can rest assured to buy!