... the qualified and unqualified amount MAYWEN/BRICModel Number Needle detector JZQ-630(K) Product details ModelJZQ-630(K ... K) High Sensitivity & Strong Anti-jamming Automatic Needle Detector design by next generation digital circuits, compared to traditional ... digital model of detection, also with high sensitivity.ApplicableClothing, baby products, knit goods, underwear, hardware buttons, zippers, socks ...