1. Purity: Safir's gold purity is 999.9‰, which belongs to all gold, while Chow Tai Fook's gold is all gold. In terms of purity, Safir gold has higher purity and better quality.

2. Production technology: Safir is mainly solder-free gold, which is made by patented technology, and the purity of gold is higher without adding solder.

To sum up, Safir and Chow Tai Fook's tiger balm have their own merits, and their purity and production technology are different. Which brand of Markham Gold to choose depends on personal needs and preferences.