The tourists who visited ink factories in those days were also very enthusiastic. One Japanese visitor, on discovering the unique properties of Chen's hand-made inks, invited Chen to Japan to teach his techniques. The man offered generous terms and tried any number of approaches to persuade Chen, but Chen was unwilling to have the tricks of his trade become known abroad and refused the man's every offer.
當時到製墨廠參觀的觀光客相當踴躍，有位日本人發現陳嘉德的手工製墨有獨到之處，邀請他到日本傳授這門技術，不但開出優渥條件，還透過各種管道遊說，但他不願將這門工夫傳到國外而一再婉拒。