Companies / Industry directory / Materials & Chemicals Secondary Smelting & Refining of Nonferrous Metals 1 stock in Materials & Chemicals · SIC 3341. Company snapshot 2026-10-09 · Calculated market cap as of 2026-10-02 · USD Find a company or ticker Stocks in Secondary Smelting & Refining of Nonferrous Metals. Sorted by market cap, largest first. Ticker Company Market Cap Revenue (TTM) Net Income (TTM) AQMS Aqua Metals, Inc. $8.52M $0.00TTM ended 2025-09-30 −$15.99MTTM ended 2026-06-30 No matching companies.