We can classify the Aroma diffusers into 5 main categories by using different materials for the cover shell.

1. Bamboo

Features: BPA Free/rustic and idyllic

Disadvantages: heavy, inconvenient to carry

A. Appearance of ordinary bamboo

B. Hollow out bamboo carving

2. Glass

Features: BPA free/ delicate lightweight, artistic quality

Disadvantages: transport fragile, need special delicate packaging, increase the cost of products

A. Ordinary glass (transparent)

B.3D glass (fireworks, butterflies or other graphic effects)

3. Plastic

Features: beautiful and light, easy to carry, cost saving

Disadvantages: Some products release BPA and other bad elements

A.PVC

B.PP

4. Ceramic

Features, BPA free art features, can be on the ceramic outside the decorative pattern

Disadvantages: heavy, poor light transmittance

5. Wrought iron

Features: BPA free, can be hollow carving, solid not afraid of moving

Disadvantages: large volume diffuser was not suggested to made in iron, product processing cost and transportation cost will be a little higher

6. Wooden case

Features: BPA free, can be hollow carving, safe when moving.

Disadvantages: weight would cause the delivery cost high.