616 signal blocker box products are offered for sale by suppliers on Alibaba.com, of which key wallets accounts for 34%, access control cards accounts for 23%.
A wide variety of signal blocker box options are available to you, such as waterproof, portable.You can also choose from pvc, epoxy and silicone signal blocker box,as well as from die cutting printing, embossing printing, and offset printing signal blocker box,and whether signal blocker box is black, or white.