Linyu Guan, Liqiang Zhang, Jiawei Ma, Chunyan Zhang and Meihua Zhang 2020. Design of intelligent trading bookcase based on new electronic control lock. IJRDO - Journal of Mechanical And Civil Engineering. 6, 4 (Apr. 2020), 10-15. DOI:https://doi.org/10.53555/mce.v6i4.3596.