Class 37

installation, maintenance and repair of air-cooled compressors and heat exchanger pumps 158438

空冷式压缩机和热交换泵的安装、维护和修理

Chinese 空冷式压缩机和热交换泵的安装、维护和修理

English installation, maintenance and repair of air-cooled compressors and heat exchanger pumps

Spanish Instalación, mantenimiento y reparación de compresores refrigerados por aire y bombas de intercambio de calor.