I AGREE ALL 3 ARE FROM TAIWAN AND GOOD OLDER NON- TOURIST EXAMPLES. THEY MAY ALL BE VARIATIONS FROM THE SAME TRIBAL GROUP BUT ONE OF OUR MEMBERS WITH MORE INFORMATION ON THESE WILL HAVE TO COMMENT AS I HAVE VERY LITTLE KNOWLEGE OF THESE. YOU ARE VERY LUCKY TO FIND 3 GOOD ONES TOGETHER AND AT AN AFFORDABLE PRICE.
PERHAPS YOU MIGHT LOOK ON THE OLD POSTS AND SEND THE MEMBERS WHO HAVE KNOWLEGE IN THIS FIELD AN EMAIL. GOOD LUCK