Financing Dilemmas of Technology-Intensive Silver Economy Startups in China: An Abductive Multiple-Case Study of Asset, Capital, and Institutional Mismatches

China's ageing population is expanding demand for health, rehabilitation, smart eldercare, and age-friendly digital services, yet young technology firms in these markets can still face financing frictions. This study examines six Chinese ventures through an abductive multiple-case design, moving iteratively between public case evidence, entrepreneurial-finance theory, and the New Quality Productive Forces (NQPF) context. Rather than treating Triple Mismatch as a pre-specified coding template, we refine it through cross-case comparison. The analysis identifies three recurrent frictions: translating productive resources into information or rights that financiers can evaluate; aligning the duration and structure of capital with commercialization; and coordinating requirements across finance, health, eldercare, data, and technology institutions. The cases also provide important counterevidence: several firms secured external finance despite relying heavily on intangible resources. We therefore present Triple Mismatch as a bounded diagnostic framework rather than a universal causal explanation. Building on the case comparison, the paper develops an Asset-Capital-Policy response architecture centered on verifiable rights and risk information, stage-matched financing, and targeted institutional coordination. International examples are used only to clarify mechanisms, not to imply direct policy transferability.