Yangzhou Dilong Machinery Co., Ltd. is a high-tech enterprise integrating the design, manufacturing, sales, and service of various trenchless equipment, specializing in the production of pipe jacking equipment, shield tunneling equipment, and their auxiliary systems. Since 2004, the company has been engaged in the design and manufacture of trenchless equipment, boasting over two decades of experience in the field. Driven by innovation in construction methods and intelligent manufacturing, and supported by advancements in design, manufacturing, and management, the company has independently developed a wide range of products, including pipe jacking machines, shield tunneling machines, pipe-jacking shield machines, hard rock tunnel boring machines (TBMs), and machines for non-circular cross-sections. The shield equipment mainly includes complete sets of pipe-jacking shield machines, slurry balance shield machines, and earth pressure balance shield machines for diameters ranging from 2400mm to 7000mm. The pipe jacking equipment primarily includes slurry balance pipe jacking machines, earth pressure balance pipe jacking machines, rock pipe jacking machines, rectangular pipe jacking machines, intermediate jacking stations, and various auxiliary equipment, with diameters ranging from 400mm to 5000mm. Since its establishment, aiming for "excellent quality, a top-tier brand, global reach, and building a world-class trenchless equipment production base, " the company has extensively absorbed advanced technologies both domestically and internationally, continuously evolving and innovating. Its professional equipment has reached an industry-leading level. Recognized and trusted by customers for its superior product quality, punctual delivery, and thoughtful service, its products are sold to multiple countries in Southeast Asia, the Middle East, and Africa, enjoying a strong reputation within the industry. Jiangsu Ruilong Equipment Technology Co., Ltd. Was completed and put into operation in 2024 in the Southern New District of Gaoyou City. As a premium sub-brand of Dilong Machinery, it primarily manufactures various types of tunnel boring machines, among other products.