UHF Metal Specific Tag Solutions in OPP IOT OPP IOT is a high-new technical enterprise dedicated into RFID industry development. We keeps developing and innovating in RFID field, especially the remarkable achievement - UHF special tags. OPP IOT concentrate on the design, develop,manufacture of the UHF special tags. UHF special tags are used for hard working environments, thus tags should be well-targeted for the certain applications,which request strict standard on the design,