Shenzhen SmartPet Technology Co., Ltd is a professional manufacturer for dog training collar, bark collar, ultrasonic bark control and many other innovative electronic pet products. We have a professional product team and R&D team who have rich experience handling OEM and ODM projects from Walmart, Chewy and Amazon directly. Dedicated after-sales team to provide professional technical support for your after sales service, and a long term cooperative forwarder to provide best shipping service.