Nanjing Zelang Medical Tech. Co., Ltd, founded by Dr. Liu Dongfeng in 2004 is a full service manufacturing company with 13 years of continued development. Staffed with more than 100 employees in Research and Development, Production and Quality Assurance departments. Our newest and extended sub-branch in North America, Zelang Group USA in Ontario CA, was established in 2015. 2016, We set exclusive agent in Tokyo, Japan.