", "publisher": { "@type": "Organization", "name": "Tech Original", "logo":" https://techoriginal.net/wp-content/uploads/2025/07/cropped-logo-khong-nen-Photoroom.png" }, "mainEntityOfPage":{ "@type":"WebPage", "url": "https://techoriginal.net/china-developed-the-worlds-first-hard-rock-blast-tunneling-machine/" } }
China developed the world’s first hard rock blast tunneling machine