diamond certified company certificate

Companies must pass rigorous ratings standards before they earn Diamond Certified. Photo: American Ratings Corporation ©2018

Welcome Aboard!

We are pleased to announce that Lei Luo, D.D.S. Family & Implant Dentistry has recently earned Diamond Certified. That means the practice has passed our rigorous 12-step ratings process and scored Highest in Quality and Helpful Expertise™.


Lei Luo, D.D.S. Family & Implant Dentistry

(650) 525-4186

Services Performed: General Dentistry, Dental Implant Treatment, Traditional & Clear Braces, Veneers, Teeth Whitening

Areas Served: The Entire Bay Area



Some Very Happy Customers

plumbing job

Smart Plumbers, Inc. has been impressing clients with its courteous service. Photo: Smart Plumbers, Inc. ©2018

No company earns Diamond Certified without maintaining high standards of customer satisfaction. So, it’s no surprise that we hear from many happy consumers who’ve chosen Diamond Certified companies. Here’s a sample of what they’ve had to say about their experiences.

Jennifer D. is glad she chose Smart Plumbers, Inc. for a recent plumbing job. In fact, she has already recommended them twice since using them. Jennifer writes, “I called Smart Plumbers and they sent someone out that very afternoon. I was very impressed with the politeness and professionalism of Alex and his assistant. They spent extra time on the job, yet the price was very reasonable.”

Jennifer is also a booster for the Diamond Certified Directory. “I’ve mentioned using your book as a resource for future business needs,” she says. “I intend to mention [Diamond Certified] on a regular basis to people in my community.” Jennifer was so impressed by the service that she signed up to be a Diamond Certified Preferred Consumer.

David had nothing but praise for Creative Window Fashions, Inc. “They bent over backward to ensure we were completely satisfied with our new window coverings,” he says. “We could definitely use them again in the future.”

Have you had a great experience with a Diamond Certified company? We’d love to hear about it. You can send your feedback to [email protected] or call (415) 884-2700.

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