Advantages
1. up and down PP headrest
2. PP backrest with nylon mesh, recline angel between 105-125°
3. TPE lumbar support, can be adjust inside and outside, up and down
4. PA sliding seat with molded foam
5. 3 levels functional mechanism with wire control button
6. 4D armrest
7. class 3 air spring, can pass SGS text
8. PA base with PU castors, pass 1300kg static pressure