About Us



Mariel Attento Rhorer


Mariel has 20 years of engineering sales and client service experience, specializing in both public and private sector infrastructure projects. Mariel began her career developing Northern California for Twining, Inc.  and is based in the San Francisco Bay Area. Mariel oversees company Sales and Marketing teams and works alongside the executive team to generate long-term company strategy. Backed by a strong track record of successfully developing relationships and understanding client and project needs, Mariel heads the expansion of the Twining Group of Companies and is responsible for new growth and increased market share.

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