qualified Rena saving Engineering Co., Ltd. is committed to energy saving measures and energy management, formed a research and manufacturing of ultrasonic heat meter, optimization and energy saving central heating metering systems and intelligent engineering services, energy management in three major sections. after more than 10 years of precipitation and development, runner became the first in China's heating industry and production qualification, heating system with heat metering products general qualifications and qualification of contract energy management company, history is the rare for four consecutive years by the national quality inspection administration of State businesses.undefined。