While at first glance it appears the same as any other card, it plays music to celebrate a whole range of occasions when opened.
行政院美籍科技顧問麥凱義博士於四月初來台參加科技顧問會議，會議閉幕當天，恰好是他的生日。工業技術研究院院長方賢齊在會場送他一張國產生日卡。他一打開，卡片竟然奏出生日快樂歌，令壽星驚喜不已。