Contact Us Quantum Dynamics Co., Inc. 6414 Independence Ave. Woodland Hills,Ca. 91367 818-719-0142 *Quantum Dynamics Co., Inc. Information Request* Use this form for special requests or additional information. Your Name (required) Your Email (required) Please leave this field empty. Subject Your Message What is the Circumference of a 1in. Diameter?(To 4 places)Defeats Spambots