https://www.ztzgsteeltech.com/uploads/2024.7.10-翻译后.mp4 Tempus publicationis: Iul-X-MMXXIV Praecedens: Quomodo nostra technologia firmitatem productionis auget? - ZTZG Deinde: CCLXXIII ERW Pipe molendinum; ERW tube molendinum; ZTZG