All Inverter control,mechanisms run smoothly, little impact for tower crane while speed changing; Schneider and Simmens for electrical parts; Compact conformation, light weight and easy to be repaired; large-diameter drum with double fold line groove has a good performance of laying rope, enables long life of steel wire rope. A full range of advanced high accuracy equipments were used, including digital drilling and cutting machine, welding robot, automatic painting line...; very high dimension accuracy, highly exchangible; raw material from best steel manufacturer; Ultrasonic crack detection for all the steel parts;strict and thorough test before shipping. Reference model for your choose SYM Hoist&Tower Crane Equipment is the professional crane and lift platform manufacturer in China . We supply all kinds of original spare parts for tower crane. We design,manufacture,installation,repair ,maintenance, trade and export following products: >>>TopKit Tower Cranes, Topless Tower Cranes, Building Hoists etc. >>>Mast section,Fixing Angle,Cabin,Electrical Parts etc. FAQ Q1: Are you a trading company or a factory? A1: We are factory. Q2: How about the installation? A2: Engineer could be sent to your site for installing and inspection. Q3: How long is your delivery time? A3:Generally 7-15 days after advance payment. Q4: Do you test all your goods before delivery? A4: Yes, we have 100% test before delivery. Q5: Is it convenient to see visit your factory ? A5: Yes,we welcome every customer to visit our company. We also supply to visit our factory by live stream. Q6: What certificates do you have? A6: CE, TUV, ISO9001 Q6: What info should I provide with the inquiry? A6: Height, max load, jib load, topkit/topless/luffing, inner climbing our outer fixing.