Core Viewpoint - Longjin Technology (300594.SZ) emphasizes its core technologies in variable frequency drives and intelligent control, highlighting its patented IGBT module drive circuits and energy-saving air conditioning products [2] Group 1: Technology and Innovation - The company possesses core technologies in variable frequency drive and intelligent control [2] - Longjin Technology has obtained patents related to IGBT module drive circuits [2] - All products are developed using variable frequency control technology, which has been widely recognized for its energy-saving effects by industry clients [2] Group 2: Production and R&D - The company owns IGBT module production and testing equipment, with some modules being produced for internal use [2] - Longjin Technology plans to continue investing in research and development to enhance its technology and product quality [2]