GB 20665-2015(英文版)
Minimum allowable values of energy efficiency and energy efficiency grades for domestic gas instantaneous water heaters and gas fired heating and hot water combi boilers (English Version)

Standard No.

GB 20665-2015(英文版)

Language

English

Release Date

2015

Published By

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China