| Item | Content |
| Chassis maintenance | repair & replace vehicle lighting |
| replace bumpers |
| replace vehicle interior accessories |
| replace tires |
| replace brakes |
| replace gear box & gear oil |
| replace filters |
| inspect & maintain axles |
| inspect & maintain engine |
| Wearing parts replacement | replace delivery cylinder |
| replace transmission sleeve |
| replace wear plate |
| replace cutting ring |
| replace concrete piston |
| replace S tube |
| replace pipelines |
| replace rubber hose |
| replace coupling , sealing rings |
| replace grease pump & oil separator |
| replace bucket sealings |
| replace mixing blade |
| replace bearings and seats |
| replace mesh |
| Cleaning & painting | high-pressure washing |
| surface cleaning and polishing |
| putty painting |
| Zoomlion, SANY or other labels |
| Control system repair | replace control cabinet |
| replace wires |
| replace switches |
| system improvement |
| replace remote charger & batteries |
| Hydraulic system repair | Replace leaked hoses & pipes |
| calibrate oil pump |
| Replace damaged hydraulic pipelines |
| replace hydraulic oil |
| replace swing cylinder seal& bearing |
| replace content gauge |
| Covering replacement | replace station |
| replace hopper upper |
| replace ladder & pedal |
| repair covering parts |
| Others | vehicle painting |
| SANY operation labels |
| pre-delivery inspection |
| leakage inspection |
| pressure test of main oil pump & boom pump |
| water testing |
| replace reducer & gear oil |
| adjust lighting function |
| painting repair |