21. Replacing Freon with Frigc costs less than $ 100. 22. Anotherer, the Evans Systems, has no more virgin Freon in stock. 23. It is that old staple on car-repair shop shelves, Freon . 24. Legitimate freon has grown much more expensive as the amount in supply dwindles. 25. Sales of freon have been vital to Discount Auto's profit gains. 26. Legitimate freon has become much more expensive as the amount in supply dwindles. 27. Supplies of Freon , long the refrigerant of choice, have been declining. 28. Freon led to the development of smaller, lighter, and cheaper refrigerators.29. The instrument package floated in a layer of freon within the balsawood sphere. 30. In 1930, General Motors and DuPont formed Kinetic Chemicals to produce Freon .
