Iche iche na ngwaahịa nke Handheld agịga Detector, na-enye ngwaahịa oyiyi na isi kwa na onye ọ bụla Handheld agịga Detector na Handheld agịga Metal Detector; Anyị bụ ndị a ọkachamara Chinese emeputa nke Handheld agịga Detector, na-atụ anya gị imekọ ihe ọnụ!