Shenzhen Smart Education Technology Co., Ltd. is located inGuangdong China and was founded in 2008. We specialize in supplyingelectronic educational products. Our company is one of the leadingmanufacturers to use "invisible" OID codes (OpticIdentification/Optic Index pens of monomer) technology in "OIDtalking pens" and "OID teacher's pointers". We have increasedR&D investment in improving OID pens, OID equipped books andaudio compression.