according to the statistics of signpost network, there are 4 registered trademarks of mattress covers.

how to choose other minor categories when registering:

1. there is one trademark in the category of choosing to register (mattress and mattress with padding, group number: 21), accounting for 25%

2. there is one trademark in the category of choosing to register (mattress and mattress with padding, group number: 213), accounting for 25%.