All but five states have sales tax (local purchases) and use tax (out of state purchases).
The five that do not have use tax are: Alaska, Delaware, Montana, New Hampshire and Oregon.
If your state is not within that short list - you are *supposed to* report out of state purchases and voluntarily pay the taxes (not many purchasers do this).
If a company has a "presence" in a state (e.g. sales office or warehouse or even just one employee) then they are usually supposed to charge sales taxes to customers within that state.
If SuzoHapp does not have a presence in California then they should not be charging a sales tax. Suzohapp lists their locations in Illinois and Nevada. BUT - some states have been trying to place agreements with neighboring states with a presence to collect tax on orders going to their state. Nevada is neighboring state to California - see if they have such an agreement.