RST, SR-SUNTOUR (Santuo)
ROCK SHOX (a brand of SRAM), MARZOCCHI (Marzoucchi)
FOX
The two in the first row mainly produce low-end spring forks
The two grades in the second row are more numerous, ranging from low-end spring forks to high-end oil and gas forks
The ones in the third row FOX generally only produces high-end hydraulic front forks or hydro-pneumatic forks
2. Level
Spring forks (no damping, spring shock absorbers)
Spring forks (damping Glue, spring shock absorber)
Oil spring fork (oil damping, spring shock absorber)
Hydraulic fork (oil damping, oil bladder shock absorber)
Oil-air fork (oil damping, air bladder shock absorber, adjustable air pressure)
Happy riding!