Designed for serums and essential oils, this 30ml square glass dropper bottle features a stable cube structure with a heavy-wall base.  Produced in a Class 100,000 cleanroom, the high-white glass body ensures chemical inertness and full compatibility with active formulas. The bottle’s flat panels allow for precise edge-to-edge silk screen printing and hot stamping without curvature distortion.  As a direct manufacturer, Dingsheng provides comprehensive OEM services, including Pantone color matching and strict quality inspection for private label orders.