h****6 发帖数: 229 | 1 Don't know if this is the right forum to ask. but any way, does anyone know
who makes carboxyl magnetic beads 磁珠(polystyrene coated, not silica coated)in
China? | h*********g 发帖数: 78 | 2 co ask, if there is no such company, i decide to go back to do this business
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