TonSun International (TSI) Tech Limited (previously known as TonSun International Limited) has established a global presence in partnership with major telecom operators. With over 14 years of industry experience, we have become a trusted SIM card manufacturer, delivering customized solutions across a range of telecom products, including SIM cards, Scratch Cards, Mobile Phones, FWP, FWT, CPE, ONT ONU, Networking Equipment, Modems, and Optical Fibers.
Our distinctive software services deliver high-quality solutions for OTA, DMC, and eSIM platforms. As a trusted SIM card manufacturer, we also offer telecom products like money wallets, instant messaging with advanced smart solutions (including payment gateways, bill payments, shopping features, and more), applets, applications, VAS, and other customized solutions.
We specialize in customized solutions for mass marketing campaigns and exclusive corporate gifts, offering a competitive edge with our paper items, such as scratch cards and stationery consumables, as well as fabrics like T-shirts, caps, and corporate uniforms. Additionally, as a SIM card manufacturer, we provide innovative telecom products to enhance your promotional efforts.