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PRODUCT DESCRIPTION: -USE FOR METAL ETCHING AND TO MAKE PRINTED CIRCUIT BOARDS (PCB) BY ETCHING COPPER. -USE FOR MORDANT DYEING. -JUST MIX IT WITH WARM WATER AND READY TO USE QTY: 1 PC. FERRIC CHLORIDE LUMPS SPECIFICATIONS: Brand: K & K Material: FERRIC CHLORIDE LUMP Net Weight: 1KL. Package included: 1 x 1kl FERRIC CHLORIDE LUMPS