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PowerOval: Science Based Premium Non-Circular Chainring
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Alphonse Vermote
E-mail: info@poweroval.com
BTW: BE0632 954 197
Adress: Blokkestraat 41B bus0.2
8550 Zwevegem
Belgium
Tel: +32 472 71 78 26
Additional scientific explanation
Gilbert Storme
E-mail: gilbertstorme@yahoo.com
Lievin Malfait
E-mail: malfait.lievin@skynet.be