747I1220JH0EK规格参数
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747I1220JM00J 747I1220JM0EJ 747I1220JM0EK 747I1220JM30J 747I1220JMH3J 747I1230KG00V 747I12505000J 747I1250JE00V 747I1260JE00J 747I1260JE00V