Statute Governing Refrigeration and Air Conditioning Enterprises Article 5
A refrigeration and air conditioning enterprise shall not operate unless it has received a permit from the competent authority in the municipality or county/city where the enterprise is located, has obtained a business registration certificate, and joins a refrigeration and air conditioning engineering association within one month.A trade association shall not unreasonably reject a membership application under the preceding Paragraph.
中文原文 冷凍空調業管理條例第5條
冷凍空調業非向所在地直轄市或縣（市）主管機關許可，領有登記證書，並於一個月內加入冷凍空調工程工業同業公會，不得營業。
公會對於前項入會之申請，不得無故拒絕。
公會對於前項入會之申請，不得無故拒絕。