Solder Paste Inspection equipment checks the printing result before components are placed, giving manufacturers an opportunity to correct defects at an early and less costly stage. The category includes Mirtec MS 11, PARMI HS60XXL, Koh Young KY8030 series, TRI TR7007 SII Plus, and Samsung three dimensional SPI systems. These platforms provide different approaches to inline measurement, board coverage, software, and process data. An SPI machine evaluates deposits for conditions such as insufficient paste, excessive paste, height variation, volume variation, offset, bridging, shape irregularity, and missing print. Three dimensional systems create quantitative information rather than depending only on a flat image. That data can reveal stencil blockage, poor cleaning, alignment drift, paste condition changes, support problems, or unsuitable printer settings before the same issue affects many boards. Selection should begin with the PCB range and process objective. Important items include maximum panel size, smallest pad features, inspection speed, measurement method, conveyor direction, line height, programming workflow, review station functions, and the reports required by quality teams. Buyers should also determine whether the SPI must exchange feedback with a printer, connect to factory data systems, store traceable results, or operate independently as a screening station. The Solder Paste Inspection category is relevant to fine pitch electronics, automotive modules, communication products, industrial controls, medical electronics manufacturing, and other applications where paste consistency influences solder joint quality. High mix plants may value fast program creation and clear defect review, while volume lines may emphasize cycle time, statistical process control, and stable communication with surrounding machines. When contacting WenZhan, provide the board dimensions, pad technology, current printer model, expected line output, inspection location, data requirements, and preferred SPI brand. For each listed system, the exact configuration, software, cameras, options, and condition must be confirmed. A representative board and production sample can support program or capability evaluation. By matching the inspection system to the printing process, the factory can use SPI information not only to reject a board, but also to improve stencil printing and prevent repeated defects.