Based out of Torrance, California, USA, Dogtra Company produces the world's finest e-collars. Dogtra's focus is on offering user-friendly e-collars that are designed for the most demanding training conditions. Dogtra offers a complete line of e-collars from small-breed pet trainers to a variety of sporting dog units as well as K-9 Police work. Dogtra is a proud member of ECMA (Electronic Collar Manufacturers Association), and PETT (Partnership for Electronic Training Technology). All of our factories are certified ISO 14001 - Environmental Management, and ISO 9001 - Quality Management standards.