Core Insights - Defu Technology (301511) has successfully commenced mass production of its HVLP3/4 product as of November 20 [1] - The HVLP5 product is currently in the sample development stage [1] Company Summary - Defu Technology has achieved a significant milestone with the successful mass production of HVLP3/4 [1] - The company is actively working on the HVLP5 product, which is in the process of being developed and sampled [1]