YumCha » Member Directory Our printed Member Directory is available from member businesses and nonprofits all over the City of Waltham! Our Online Directory is below! Go back to directory. Add to Address Book. YumCha YumCha Contact: Sean Zheng Home 901b Main Street Waltham MA 02451 home Work Phone: 781-782-2622work Categories: Eating & Drinking Places Updated 2 years ago. Share this:Click to share on Facebook (Opens in new window)Click to share on Twitter (Opens in new window)Click to share on LinkedIn (Opens in new window)Click to share on Pinterest (Opens in new window)Click to share on Tumblr (Opens in new window)Click to share on Reddit (Opens in new window)Click to share on Pocket (Opens in new window)
