High quality oil cylinder and imported sealing ring have greately improved the sealing perormance, reduced the maintenance cost. PA model adopts heavy C shaped steel crane span structures which is much more firmer and safer. PZ model adopts high grade international box iron crane span structure, ensure longer and safer use. Flexible movement, safe handling and save labor. Comply with European EN1758 standard. Strictly handle according to the manual, overload is prohibited, in order to ensure safety.