Abstract: To define and express the data of each and every stage in the product lifecycle and maintain the interdependencies among the data, the product lifecycle is divided into five stages, i.e., demand analysis, conceptual design, engineering design, manufacturing and service/support. Then, a framework is proposed for the lifecycle model through logical mapping, which is set up taking advantage of all the data and documents relevant to the product and stored in decentralized databases to cover the five submodels corresponding to the five stages. Based on the framework, a manufacturing information model is developed for the product, including the information on parts' processing, assembly and manufacturer's technology resource.