HCE Service Limited provides end-to-end mobile payment services including HCE token issuance and payment processing. They help card issuers implement HCE projects through strategic analysis, system design, implementation, testing, and support. Their services follow security requirements for mobile internet payments like authentication, signatures, integrity, and confidentiality. They offer a secure payment model with a mobile app, token issuance, and payments network connecting users, merchants and payment processors through their cloud platform.