Reply: 1 / Facing stone items: When exporting, it must ensure the conditions prescribed in Appendix I on the list, standards and conditions for exporting minerals for construction materials according to Circular 04/2012 / TT- BXD on September 20, 2012 of the Ministry of Construction. 2 / Mineral documents: Follow the provisions in Article 5 of Circular 04/2012 / TT-BXD dated September 20, 2012 of the Ministry of Construction.