control system box: in a helicopter setting control box; surface treatment: ... mm steel production. 8, lighting system: the double a covered 20 W fluorescent lamp, bilateral configuration. 9, ... process procedure: use of a special "H" type aluminum, all fronts be well versed in, match with the A3 ... 1 set per meter. 13, control system box: in a helicopter setting control box. 14, surface treatment: above ...