... 5, Absolute beautiful: novel material, reduce its dead weight, folding armrest to save more space; 6, Absolute reliable: the quality guarantee ... ductile, impact resistance, corrosion resistance, and anti-skidding; C, Armrest: Using SPCC seamless steel tube, thickness is 1.8 to ... in 15 minutes.3, Armrest: Add 6 times of starting force to the armrest for 1 minute, armrest should no deformation and loose ...