Versions of Washington Code 70A.340.030 - Prohibition on the sale of certain brake friction material -- Exemptions on LawServer 2023 Washington Code 70A.340.030 – Prohibition on the sale of certain brake friction material — Exemptions 2022 Washington Code 70A.340.030 – Prohibition on the sale of certain brake friction material–Exemptions 2020 Washington Code 70A.340.030 – Prohibition on the sale of certain brake friction material — Exemptions