Notebooks, pencil cases and file folders need repeated opening and bending, requiring flexible, durable glue joints. Coated stationery boxes have poor cold glue attachment without surface activation. Keqi plasma improves glue anchoring on all stationery packaging substrates.Plasma treatment makes cold glue combine tightly with coated art paper and grey board. The cured glue line withstands hundreds of folds without cracking, matching daily repeated use features of stationery products. The low-noise equipment suits office stationery packaging clean workshops.Easy parameter adjustment adapts diversified stationery box styles. Printing workshops replace labor-intensive manual sanding with inline plasma, stabilizing mass production quality and cutting labor dependence on post-press lines..