The Belle II Silicon Vertex Detector (SVD) is innermost tracking detector which makes tracking both short and long living particles to reveal the New Physics. The SVD group is now in the mass production phase. In this presentation, we'll report the status of the mass production of the SVD layer 6 group and review the quality and performance of assembled modules. The assembly procedure is developed to reach precise mechanical precision. The intensive wire bonding study is done to make stable connection among the sensor, circuit and readout chips. The Electrical Quality Assurance (EQA) is performed to check the electrical response throughout the production. The detector performance is checked with radioactive source experiment at the last stage of module production. The mass production status will be presented with the summary of SVD layer 6 quality.