Color classification
Single layer can put 4 pairs of [can be hung can be placed on the ground] Cream White
Double layer can put 8 pairs [can be hung can be placed on the ground] Cream White
Three layers can put 12 pairs of [can be hung can be placed on the ground] Cream White
Single layer can put 4 pairs [can be hung and can be placed on the ground] stable black
Double layer can put 8 pairs [can be hung and can be placed on the ground] stable black
Three layers can put 12 pairs [can be hung and can be placed on the ground] stable black
Single layer can hold 4 pairs of [can be hung and can be placed on the ground] Accessible Luxury gold
Double-layer can hold 8 pairs of [can be hung and can be placed on the ground] Accessible Luxury gold
Three layers can put 12 pairs of [can be hung and can be placed] Accessible Luxury gold