SIM card producted by MIM process which can be easy to meet customer demand for cost control. Complicated products are more suitable for MIM process. Regarding this SIM card slot, we suggest multi-cavity mould for customer firstly, which not only helpful for cutting down cost but also good to improve daily output. Secondly, optimizing production process, management and labor to the best in order to reduce the production cost. The advantage of the MIM process are high efficiency and low cost.