... .Low cost and easy operation 4.Space saving 5.CE,ISO,SGS cert HOT!!BZ/BZD model pillar mounted ... of the crane are the trolley and crane both having stepless frequency conversion control system, with features of braked stably, accurate ... reliability a lot, which can be adjusted by itself with dustproof design; it can be used more than 1 ... plant. Workshop heavy duty column swing jib crane with CE cert