Your questions are welcome, and your suggestions greatly appreciated!

Please contact us by e-mail, fax, phone or letter, as you prefer:

Yum Jung, Treasurer                             Mary Tsang,  Secretary
Yum's Mechanical Co., Inc.                  2401 Ingalls St
1649 Jerrold Avenue                            San Francisco, CA 94124
San Francisco, CA 94124                   Ph: (415) 822-9628
Ph: (415) 642-1818                              Fx: (415) 671-1063
Fx: (415) 642-1840                               Email: celenalam@gmail.com
Email: YumJung@sbcglobal.net