Cell grouping, BMS integration and custom battery-pack import. Review the four-dimension supplier score (product / display / marketing / assurance) and star rating; prefer verified suppliers.
Basis：EU Battery Regulation: carbon footprint, recycled-content, battery passport, EPR (2026 EU green supply-chain compliance report, 2026-06-30).
Platform action：Provide compliance declaration, carbon footprint and third-party test reports.
Basis：EU PPWR: plastic reduction, recyclability, labelling and EPR (from trade knowledge base).
Platform action：Packaging & labels must meet PPWR to avoid destination-port rejection.
L1 public (voltage, capacity — visible to all); L2 controlled (continuous current, IP — verified buyers); L3 confidential (peak current, exact dimensions, BMS version, tolerance — unlocked by supplier authorization). Three tiers protect factory know-how while letting buyers gain information progressively.
Check the four-dimension score: product power (live products & spec completeness), display power (profile & media), marketing power (response & exposure), assurance (certs, delivery score). Prefer verified factories with higher star ratings.
Post a structured RFQ; the platform auto-matches verified factories by application and target market, and returns a compliance summary.