Article 21 The fuel gas producing enterprise, the selling enterprise and the gas supply station shall not provide the unit or individual person holding no qualification certificate or gas supply license with fuel gas for resale.

• 第二十一条燃气生产企业、燃气销售企业及其燃气供气站点不得向无资质证书、无供气许可证的单位和个人供应用于销售的燃气。