Generally H3C switch hardware warranty is one year. There are very few machines that have a 3-year warranty. Depending on how long you buy, if more than 3 years certainly out of warranty. If more than one year is basically over. If you're not sure when you bought it, check the serial number of the switch.
Example: 210235A31SB084000113
The 12th and 13th digits are the year of manufacture. So the device is made in '08.
If you are not sure, please call 8008100504 to confirm.