12708*50mm导伏241272626306致冷12v5026315制体片半1270512712冷

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.26309/5026315tec1*26308/制冷30v26306尺寸/50mmy/片-26303/263

26306半导体电子制冷24vtec1 制冷-*26308贴5026315 片50mm26303