How to write short messages for holiday notices of water purifier users?

Dear XX water purifier users, hello, we are XXX water purifier (company name). The May Day holiday is coming soon. If you don't use the water purifier for a long time during the holiday, you should take good measures.

Specific measures are: (see what you want to remind users)

Friendly reminder of XXX water purifier enterprise, I wish all users who use XX water purifier a happy May Day!

Specific words don't need much, just give people a sincere reminder, and customers will remember you!