Twelve board families we build, and where each one strains the line

Motor-drive power stage plus console and keypad board — usually two PCBs joined by a ribbon or harness.

Basis: Judged on process fit rather than market data: large boards, through-hole power stages and low layer counts are work a pure placement house can win outright.

6S–13S BMS, MOSFET power bridge, MCU control and a separate handlebar display board.

Basis: No published figure used here. Demand follows Chinese e-bike exports to the EU and US, where buyers routinely split controller and display between two suppliers.

BMS board, pure-sine inverter control board and a display / input board — three assemblies per unit.

Basis: Category leaders test in-house and buy in tens of thousands. The realistic entry is second-source and accessory boards, not the flagship unit.

Main control board, brush and pump motor drive, plus sensor and charging boards.

Basis: The most-searched consumer category of the four, but unit pricing is compressed and volume buyers specify in-circuit test — which this shop does not run in-house.