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Step 3: Put the cushion (D) on the seat board (B) and fix it to the chair by velcro, and then put the
lumbar under the cushion, now, the chair is ready to use.
Step 2: Attach the upper side of right arm (A1) to
chair back (C) by using bolts (CC) and fix the lower
side of right arm (A1) to chair back (C) by using bolts
(AA), repeat it to left arm (A2), tighten all bolts fully
at this step.