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<img src=‘/uploadfiles/image/20210512/1620782960817049024.png’ title=‘1620782960817049024.png’ alt=‘image.png’ width=‘1’ height=‘1’/>您好 这个PCB黑色部分是什么工艺呢,能做吗<br /><img src=‘/uploadfiles/image/20210512/1620783093659000250.jpg’ title=‘1620783093659000250.jpg’ alt=‘PCB.jpg’/>