Established in 2011, Shenzhen Hengrongda Instructional Instruments Co., Ltd is specialized in R &D, design, production and marketing the Electronic Educational Products for kids. These lines cover electronic reading pen, kids bedtime toy story teller, sound books with pen and the components. We have a large number of electronic engineers who concentrate on printing books with hidden codes, cutting voices, synthesizing voices, and so on. Moreover, we have a complete production chain, from product shaping, structure designing, mold producing and PCB and software designing to manufacturing and after-sales services. Our products sell well at home and abroad, including North America, Mid East, South Korea, and Southeast Asia. All products have passed relevant certification, including CCC/ RoHS / UL / CE / FCC / IC .