Crude oil topping units fill a need for crude oil producers that have domestic requirements for diesel, fuel oil, kerosene, AGO, LPG or asphalt but donât have total refining capacity. Essentially they are atmospheric distillation units that produce hydrocarbon boiling point cuts from resid to LPG. topping unit is an inexpensive, technically simple means to enhance the value of crude oil near the source of production. Crude oil distillation is an energy intensive process that requires crude oil heaters with cross heat exchangers.
In the U.S., the legal definition of an Antique is any item over 100 years old. The term Vintage is used to describe something that is second generation or older. So the toys your parents played with, or the clothes they wore when they were your age would be considered Vintage but not Antiques.
Don't cram pieces together as that can cause breakage or damage to finishes. Insurance is always recommended since many old pieces are impossible to replace. So there you have it. You don't have to be an expert or dealer to buy and sell vintage costume jewelry on ebay.All you need is an appreciation for fine old things and a bit of a homework.lease sign in to vote on this Guide. There is a big market for vintage costume jewelry, and you don't have to be a dealer or an expert to put cash in your pocket and smiles on a buyer's face.