With the diversification of the customer need, there is an issue for a business model to realize mass customization in the automobile industry. A new production planning system of implementing mass customization, which is concerned with a single-item production planning system, has already been presented. This paper proposes a multi-item production and inventory planning model of the mass customization that considers the restriction of daily manufacturing capacity. This model becomes a stochastic programming problem of which sub problem is a linear programming problem. An efficient and practical solution algorithm for the multi-item model is developed.
