 This foreshadowed an industry trend of importing technology and exporting finished goods that describes most of the 20th century.However, in the 1920s, Japan became the main supplier of machines, and some began to be built in China as well, establishing the textile-machine-tools industry which would eventually grow enough in volume to supply neighboring countries as well.While the total capacity of the Chinese mills into the 1930s was greater than that of the Japanese, a third of the cotton yarn and half of the cotton goods produced in China were made by Japanese owned mills.