Clase 37

机械冲洗{指明具体物体，例如暖通空调系统、机械、供水管道等}类清洁服务 037-3048

Chino 机械冲洗{指明具体物体，例如暖通空调系统、机械、供水管道等}类清洁服务

Inglés Cleaning services in the nature of mechanical flushing of {indicate specific objects, e.g., HVAC systems, machinery, water pipelines, etc.}