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Dear Chocolate lovers!   I am a chocolatier from Belgium.   I am considering buying second hand equipment and would like to get your advises and recommendations on the models I found. First precision, I want to start slowly..but surely a small bean to bar  process. So, here are the machines : First one is a BONNET 3 cylinders refiner Second is a lab-size conche made by Petzholdt   WHo knows how t…