Drake Chan

Certified Passive House Consultant

Crystal Windows & Door Systems, Ltd.

3110 Whitestone Expressway
NY 11354 Flushing
United States of America

Phone: +1 646-321-5460

Initial by Exam

Certificate valid from Nov. 22, 2018
Certificate valid until Nov. 22, 2023
The certificate only applies to this person.

Examined by Passive House Academy / O'Leary, Tomás at New York, United States of America