PDG’s Team Leader for Energy Services, Chonghui Liu (CL), will be presenting the ASHRAE NY Monthly Dinner Meeting. His presentation...

This Friday, PDG’s Team Leader for Energy Services, Chonghui Liu (CL), will be presenting virtually at the 18th Annual NYS Green Building...

On May 12th, the 2020 Energy Conservation Construction Code of New York State went into effect, and there isn’t a “transition period” for...

Chonghui Liu (CL), P.E., PDG's Team Leader for Energy Services, had the pleasure of presenting at the 16th Annual CNY Engineering Expo in...

PDG's Team Leader for Energy Services, Chonghui Liu, P.E., CEM, LEED AP, wrote an article that was published in High Performing...