Professional oil fume pipe cleaning organizations can be rated into three levels: A, B, and C based on their comprehensive strength, including five aspects: business scale, human resources, hardware facilities, technical strength, and honest management.
T/JSCA 002-2022 history
2023T/JSCA 002-2022 Classification and evaluation of range hood facility cleaning service
2018T/JSCA 002-2018 Classification and evaluation of cleaning service