宝石検出器

1231 gem detector products are offered for sale by suppliers on Alibaba.com, of which industrial metal detectors accounts for 32%, jewelry tools & equipment accounts for 16%, and flashlights & torches accounts for 9%. A wide variety of gem detector options are available to you, such as oem, odm and obm.You can also choose from abs, plastic and steel gem detector,as well as from treasure hunter, treasure hunter finder, and inspection gem detector,and whether gem detector is blue, or white.