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I dissolve metals from electronic boards with ferric chloride, and sequentially isolate each metal. Copper, tin, lead. Regeneration of ferric chloride with gaseous chlorine. Email: [email protected] Telegram: https://t.me/Pirroxim Rutube: https://rutube.ru/channel/39285211/ ZEN: https://dzen.ru/id/66ad387a10e3722c6d... VK Video: https://vk.com/club226927521 For donation Sberbank card: 4276 4000 6876 4092