All modules are tested and filtered for their electric performance conformity. According to electrical parameters, the electric performance and reliability of module should be in compliance with customers' requirements.

Apart from wafer test, which could be used to judge qualification of electric performance of chips, quality assessment has to be performed to ensure chip's reliability.

During the process of control, SPC (statitic process control) technology for processing management and control of CPK value of key process are adopted. In addition, all the related data are collected for statistic analysis after every batch production to ensure the difference of statistical value.

All materials are subject to batch production verification, to ensure that the material could meet specific requirements of different products with low defect rate. This is the foundation to make high reliability products. This is the foundation to make high reliability products.