Quansheng joins DMR (Digital Mobile Radio) Association in April, 2017 and has become DMR Category 1 Member (Full Members, Manufacturers). http://www.dmrassociation.org/dmra-members.html
The standard is designed to operate within the existing 12.5kHz channel spacing used in licenced land mobile frequency bands globally and to meet future regulatory requirements for 6.25kHz channel equivalence. The primary goal is to specify affordable digital systems with low complexity. DMR provides voice, data and other supplementary services. Today, products designed to its specifications are sold in all regions of the world. The standards that define DMR consist of four documents.