In 1655 Itowappu nakama was dissolved owing to the protest the Shogunate received from the Chinese merchants; (it is said that there existed Seiko TEI [Zheng Chenggon]) in the background of this protest; afterwards, the Shogunate controlled the trade of raw silk threads by trade control called 'shibo baibai' in which appraisers selected from the merchants from the above mentioned 5 cities appraised the goods brought by foreign merchants and trade was executed with the set price based on those appraisals.
1655年（明暦元年）中国商人の抵抗（この背景には鄭成功がいたと言われている）を受け糸割符仲間は解散し、市法売買となった。