@ The catalogue for Steel Presser Feet. It is published in 2000. All the products are marked in T.T. brand or KH brand. They show the highest technology for parts manufacturing. Steel feet is about 97 times more durable than the foot made by compressed iron powder.
@ The catalogue for all kind of the feed dog of single needle machine. There are also the rubberized and Teflon feed dog.
@ In Kwokhing.com, you can find two catalogue for folder, this T.T. folder and KHF folder. T.T. folder is designed in Japanese style.