pao has two different definitions, which are as follows: 1. pao: olefin olefin in English: Poly Alpha Olefin, and poly a olefin pai is a kind of synthetic base oil, which is made by polymerizing ethylene to produce alpha olefin, and then further polymerizing and hydrogenating. It is the most commonly used synthetic lubricant base oil, and has the widest application range.

2. PAO: brand pao, which is a brand trademark applied for registration by MTG, a joint-stock company, in China Trademark General Administration. The application date is April 2, 218, and the application/registration number is 29979949. Date of application: April 2, 218; International classification: 28. The contents of goods/services are: exercise equipment; Sports equipment; Apparatus for exercise body muscles; Bodybuilding device.