How to keep BBQ dried pork (肉干) fresh

In Singapore and Malaysia, BBQ dried pork (肉干) is a common gift during Chinese New Year.  Often we have too much and turn stale if not finish quickly.  To keep them fresh, wrap them up in paper and keep them in zip lock bags, and store into your freezer.  When you need them, take out the amount you need to thaw for 30 mins, and heat up slightly in microwave oven or toaster oven. Careful when using toaster oven, heat up the toaster till hot first, spread out the pork slices on a plate, and put into the oven, turn off the heat and let the heat warm it up, so that it will not burn or dry up the pork slices.