From introduction to mastery of tax exemption, credit and refund in manufacturing enterprises 并列题名：From introduction to mastery of tax exemption, credit and refund in manufacturing enterprises From Introduction to Mastery of Tax Exemption, Credit and Refund in Manufacturing Enterprises 并列题名：From Introduction to Mastery of Tax Exemption, Credit and Refund in Manufacturing Enterprises Practice of tax exemption credit and refund in foreign trade enterprise 并列题名：Practice of tax exemption credit and refund in foreign trade enterprise From introduction to mastery of export tax refund in import & export corporations