As a professional solution provider in the field of smart card packaging, TOP BUMPING SEMICONDUCTOR CO., LTD. core product —— smart card CSP module, based on technological innovation, provides high reliability and wide adaptation packaging services for various industries. The module adopts a unique WLCSP technology. With excellent structural stability and environmental adaptability, it achieves the dual advantages of "high reliability + strong applicability", and can be widely adapted to core fields such as mobile communication, finance, social security, and intelligent Internet of Things, meeting the application requirements in different scenarios. To continuously ensure the stability of production capacity and quality, the company has accelerated its strategic upgrade since 2021 With the strategic capital support from Xingzheng Investment, a wholly-owned subsidiary, " TOP BUMPING TECHNOLOGY CO., LTD. ", was established. At the same time, 1,000-level and 10,000-level high-standard purification workshops were built, and a high-level fully automatic RDL production line was set up, laying a solid foundation for large-scale and high-precision production from the hardware end. Relying on advanced technology and production systems, the company has completed multiple packaging verification and mass production cooperation of core chips at home and abroad: successfully adapted to the S3D* series chips of South Korea, the SLC3* series chips of Europe, and the series chips of leading chip manufacturers in the Chinese mainland, achieving deep compatibility with mainstream chip platforms. With strict quality control, it has consecutively passed the CQM (Mastercard) supplier qualification certification for overseas customers at the Grade-B level for two times, and its product quality has been recognized by international authorities. Up to now, the company has delivered billions of CSP communication modules and dual interface modules to customers around the world.  At the same time, the company has a stable and professional technical team, always "customer satisfaction" as the core, continue to provide high-value module products and packaging services, become the global customers trust long-term partners.