Tower Crane 1. CE, ISO9000 CERTIFICATE 2. Jib length: 45M 3. Max load: 4Ton 4. Max Height: 100M 4T Tower Crane QTZ45101. CE, ISO9000 CERTIFICATE 2. Jib length: 45M 3. Max load: 4Ton 4. Max Height: 100M5. Perfect after-sales service 4 ton topkit tower crane