Material High-quality Glass Color changing yellow and red Capacity 20ml 30ml 50ml Usage Essential oil, serum, hair oil, etc. Surface Treatment Electroplating, frosting, hot stamping, silk printing, flocking, labeling, color coating, etc. Seal Type dropper OEM Sample processing, brand customization Samples Free, need you to bear the express cost or proofing cost if necessary. MOQ Products In Stock: 10000 pieces. …