In third-party manufacturing, there is no time compulsion to deliver the goods whereas contract manufacturing has delivery time compulsion. Mostly small companies work on the basis of third-party manufacturing whereas medium size and big companies work on a contract manufacturing basis.1. Difference Between Third Party manufacturer and Contract Manufacture : Practically there is no major difference in both terms. These could be used in place of each other. There is a theoretical difference in both terminologies. Third-Party Manufacturing term is used when a company gets manufactured product with its brand name at a particular quantity timely from a manufacturing company e.g. 1000 box order as a one-time requirement.