器5a制冷1990540mm工业设备*片温差半导体片医疗-tec140 致冷24v

片致冷24v工业1990540mm *40设备温差 片半导体-器医疗制冷tec15a

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设备1990540片 5a医疗工业tec1- 制冷温差器致冷片24v40mm半导体*

tec124v/*19903/片-半导体19904199012/40mm19901//制冷1990540

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器设备医疗*5a40 1990540mm半导体致冷工业-片片24v制冷tec1温差