Structure of Social Security Numbers. A Social Security Number (SSN) consists of nine digits, commonly written as three fields separated by hyphens: AAA-GG-SSSS. The first three-digit field is called the area number. The central, two-digit field is called the group number. The final, four-digit field is called the serial number.
Fabrication, is the building of something brand new, that's never been seen before, or invented. Manufacturing, is the duplication of something on a mass scale. Generally, the way it works is, you fabricate something that you need, then manufacture what you fabricate. A good example is, a car company decides to design a brand new car from the ground up.
The Differences between Industrialized (modular) Homes and Manufactured Homes . The primary differences between an industrialized (modular) home and a manufactured home are: the codes to which the homes are built. Modular housing in the State of Texas is constructed to the same codes as site built housing. Manufactured housing is constructed to Federal HUD code standards.