Contact Us

OTG EnviroEngineering Solutions, Inc.
7700 Edgewater Drive, Suite 260
Oakland, CA 94621

Phone: (510) 465-8982
Fax: (510) 868-8044

Xinggang Tong, President
xtong@otgenv.com

Contact us by regular mail
P.O. Box 70125
Oakland, CA 94612