Social Worker Act Article 32

The organizing region of the social worker association shall be divided according to the current administrative region into county (city) association and provincial (municipal) association, and the National Social Worker Unite Association shall be established. In the same region, a social worker association in the same rank shall be limited to only one.
中文原文 社會工作師法第32條
社會工作師公會之組織區域依現有之行政區域劃分,分為直轄市公會、縣(市)公會,並得設社會工作師公會全國聯合會。
在同一區域內,同級之社會工作師公會以一個為限。

English translation for reference only; the Chinese text prevails. Not legal advice.