Aug 18, 2021 · How to convert a cargo van into a refrigerated cargo vans? Recently we sell a set of V-300 van reefer unit to our Italy customer Mr. Gragnoli for converting his van to refrigerated cargo vans. How to do that? Just to add a van refrigeration unit in the rooftop of cargo vans. Mr. Gragnoli has a cargo vans and he wants to change it to delivery fresh food for