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ADD HIGH TEMPERATURE FIBERGLASS INSULATION SLEEVES (400 - 600 °C) TO WIRES CONNECTIONS

SOLDERING IRON TIP SHOULD BE PROTCTED WITH SOLDERING ALLOY CONTAINING SILVER (WHEN ITHS NEW AND FROM TIME TO TIME TO PROTECT IT) USE COLOPHONY (ROSIN) WITH AMMONIUM CHLORIDE, BORIC ACID, CITRIC ACID, PHOSPHORIC ACID ETC.