For all export businesses, the Customs will upload the export information to State Taxation Administration of The People's Republic of China, China, and the local tax authorities will regularly compare the export information declared by the export enterprises under their jurisdiction with the export information provided by State Taxation Administration of The People's Republic of China. If there is any information inconsistent with the comparison, the tax comparison system will give an early warning. If the export business is not declared, the tax will be regarded as tax evasion.