The TL 9000 standard was developed by the QuEST Forum, an industry group made up of telecommunications companies including service providers, infrastructure vendors, second- and third-party suppliers and liaison bodies.

• 铊标准,9000年制定的追求论坛一个产业群体,由电信公司,包括服务供应商,基础设施供应商,第二和第三方供应商和联络机构。