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Casun 5500mW 450nm12V High Power TTL Adjustable Blue Laser Module DIY Engraving Machine Accessories 5.5W, US $ 9 - 11.69 / Piece, Guangdong, China, Casun, 3D Printer Filament.Source from Guangzhou Fude Electronic Technology Co., Ltd. on Waimaotong.com.