Most Microfilm manufactured before 1980 has an Acetate Backing Plastic. These acetate films can last long less than 100 years. This acetate called "Vinegar Syndrome". When the acetate film begins to degrade, it releases acetic acid. The acid released into the air trapped by the film's canister causing a rapid acceleration process of film degradation. Major complications with vinegar syndrome are that the films tend to "bow and curl". In the advance stage, the film so wavy that if it is taken out of its storage reel, it cannot go back on because the space required accommodating the "bow and curl" would require more than double the original space it occupies. To reduced degradation, these films are stored in vault with molecular sieves though not many vendors can supply such storage facility. As an option, the acetate microfilm duplicated using polyester plastic backing. In comparison, all Master Microfilms of today uses a polyester plastic backing. Under proper Storage conditions, it has a life expectancy of at least 500 years. Services to duplicate acetate are also available by us. Microfilms produced by third parties are also available. They produced in standardized formats thus the quality of the print is always subject to the quality of microfilm produced and the quality of original document. If the documents not indexed, every frame on microfilm has to be manually scan to locate the actual frame for printing.