Travlon was established in 1962 and has a factory in Brunswick, a suburb of Melbourne, that manufactures nylon, corozo and polyester buttons, as well as other products. They claim to have in excess of 3,500 buttons in their range. They started out supplying Australian clothing manufacturers, but now have extended to retail. They are now known as Travalon Trimmings.
See https://www.travlontrims.com/
TRAVALON SAMPLE CARDS
See also http://www.austbuttonhistory.com/23rd-august-2020/