There will be plenty spare time after retirement. Return to the delight of sound and listening to music at the movie theater. Any friends looking for advise or to share ideas are invited to come. I don't want the knowledge and experience I've gained to go to waste. It should be good if it is valuable to others. I wish to provide correct information to my friends, as well as anyone else who is interested in these topics. You can reach out to us via email: yuthana.kaklong@gmail.com or phone at +661-81-869-8200 (Bangkok Thailand).