Shenzhen Ejoin Technology Co.,Ltd is a professional developer and manufacturer specialized in VoIP&SMS hardware and software since 2003. We provide high quality 2G/3G/4G VoIP gateway, SMS modem, IP proxy modem and related software solutions for carriers and providers all over the world. We have our own R&D team and professional technical support team to make sure high quality of our devices and high-level satisfaction from our clients. Our products are widely used in multi-SIM needed industries. such as call center system, bulk SMS sending/receiving, verification codes or one-time password, top-up business, multi-IP solution, etc. Customer satisfaction is our eternal pursuit. We are looking forward to creating a brighter future with all our customers!