The HBV Rapid Test Kit ecosystem links upstream, midstream, and downstream actors that convert raw inputs into point‑of‑care diagnostics. Upstream suppliers provide reagents, membranes, and plastics for immunochromatographic strips. Midstream includes technology providers delivering assay chemistries and detection hardware, OEM manufacturers assembling kits, and system integrators adding software and quality controls. Downstream channels distribute finished kits to laboratories, hospitals, and community health centers where end users perform testing and record results. Value emerges from material quality, assay performance, regulatory compliance, and efficient distribution, captured by manufacturers, distributors, and service firms.