The mini reflow soldering machine (also known as desktop reflow soldering) is a compact soldering device designed for R&D, small-batch production, and special scenarios. Its core function is to meet specific soldering needs at low cost and with flexible operation, complementing traditional large multi-zone reflow soldering machines. Core Functions and Positioning Differences R&D Validation and Small-Scale Production Suitable for new product prototype testing and process parameter tuning (e.g., lead-free solder experiments), avoiding the use of large-scale production line resources and significantly reducing R&D costs. Repair and Rework Support Enables localised rework on individual PCBs, precisely controlling the soldering position (e.g., BGA chip rework), avoiding secondary damage caused by re-flowing the entire board. Educational and Training Tools Used in electronics-related academic institutions to demonstrate the entire SMT reflow soldering process (preheating → reflow → cooling), providing an intuitive demonstration of solder joint formation mechanisms.