demand.Cospheric開發和生產微球（球，球珠，微珠，微粒）。微球的材質有聚乙烯，聚甲基丙烯酸甲酯（PMMA），二氧化硅，玻璃，微球定制服務可以自定義顏色，磁性，正負電荷的微球，功能化微球和包被的微球都有現貨。
公司：www.cospheric-microspheres.com/default.asp
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