Large one-off tender: 12,000 carbon-frame fat-tire e-bikes for a public fleet

We've been awarded a framework position to supply e-bikes for several municipal bike-share expansions, and one of the participating cities has picked this general spec: carbon fibre frame, front suspension, 7-speed, rear hub motor (36V/250W), 10.5Ah battery with hidden/integrated mounting, disc brakes. This is a single large delivery, not a recurring account — 12,000 units for this specific rollout. We may come back for other cities in the framework, but each is procured separately. Because these enter public fleets: - CE Declaration of Conformity plus a full technical file we can hand to the awarding authority - A tamper-resistant battery mount (your hidden-battery design may already qualify — send details) - Neutral factory colourway, no manufacturer branding — the operator applies fleet livery after delivery - Serial-numbered frames for asset tracking Delivery: DDP to a consolidation warehouse in the Chicago area, in staged shipments rather than one vessel, since the fleet is deployed in phases. In your offer: unit price at this volume, your capacity to produce this quantity and the timeframe involved, whether serialised frame numbering is a standard option, and references or documentation from comparable public-fleet orders you've supplied before.