只租不卖！我国靠这5辆车，一年赚300亿，拒售美国，卡了西方脖子

Core Viewpoint - The article highlights the success of China's self-developed SPMT (Self-Propelled Modular Transporter), which has surpassed German technology and is now a significant asset for the country, generating substantial rental income and supporting major infrastructure projects [3][21][30]. Group 1: Development and Challenges - The SPMT was developed in response to a technology blockade from Germany, which initially refused to sell the technology necessary for heavy cargo transport [4][6]. - After a failed negotiation with Germany, a decision was made to develop the SPMT independently, despite skepticism about the feasibility of such a project [10][12]. - The development process faced numerous challenges, including the creation of specialized tires and a complex hydraulic system, requiring extensive testing and innovation [14][15][17]. Group 2: Technological Advancements - The SPMT features 1152 wheels that allow it to carry up to 50,000 tons, making it capable of transporting massive structures like aircraft carrier modules and missile launch platforms [3][19]. - Its advanced control system enables each wheel to adjust independently, ensuring stability even on uneven surfaces, which impressed foreign experts during demonstrations [22][24]. - The SPMT has become a critical tool in various high-profile projects, including the construction of nuclear power plants and large-scale infrastructure in the South China Sea [25][27]. Group 3: Economic Impact - The SPMT generates approximately 30 billion yuan in pure profit annually from rental income, despite only five units being in operation [3][21]. - The success of the SPMT has led to international interest, with both Germany and the United States seeking collaboration, but China has opted to retain its technology [21][30].