The shell of the aroma is made of tinplate, which is stronger and not easy to break compared to other packaging containers. These aromatherapy candles are made of natural soy wax with essential oils, having a long burning time and giving you a clean burning experience. These candles serve as ideal souvenirs to remember a special occasion, or simply be applied at home for a cozy, serene ambiance. This aromatherapy diffuser has a volume of 4oz and can be cleaned after use to hold small items or to make a new essential oil aromatherapy diffuser. Aromatherapy shell support customized logo, logo process for patch. The prices for 2500pcs or over are based on ocean shipments.