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In this video we will do a battle between sulfur VS firing and see the difference in gold yield. Plus I will show you how to properly wash the sulfur after etching the plastic. Contact: [email protected] WhatsApp +79854370813 My channel on youtube / drblin Any advertising, swearing, politics, spam, insults, etc. are completely prohibited on the channel. All the above comments will be deleted, and the author will be blocked!