
Shenzhen Telifeng Communication Co., Ltd. specializes in the innovative use of technology to produce electronic educational products. Our "OID talking pens" and "OID teacher's pointers" are the first of their kind in the world to use "invisible" OID code (Optic Identification/Optic Index pen of monomer) technology in their production. Such all-in-one gadgets vocalize written materials when their tips are moved near the text. These two lines of products have already obtained the State Intellectual Property Bureau's patent in their new practical use. Within such series, the HB-69, and HB-79 models have also obtained the design patent on their appearance as well. Because of their unique point-to-read user-friendly feature and aesthetic design, they have drawn the market's attention since launched. As for the teaching material itself, we have been working clo... [
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