Recently, the building materials products of Luoshiwan International Trade City successfully completed a new test: the flame-retardant board passed the new inspection center and boarded the "Lancang-Mekong International Express" to Myawaddy, Myanmar. This cooperation makes the circulation of goods more convenient. The "Lancang-Mekong International Express" takes only 26 hours from Kunming to Vientiane. In addition to the 1-2 days for handling containers and customs clearance at the Laotian port, the fastest railway transportation of goods from Kunming to Vientiane takes only 3 days, which saves 3-4 days compared to road transportation. The timeliness is significantly improved, which can effectively reduce the comprehensive cost of foreign trade enterprises.