As SpaceX launches a trillion-dollar IPO, its vast supply chain has become a capital market focus, with Chinese investors frequently questioning whether A-share companies are part of it. Reports indicate that while firms like Western Materials and Zaiguang Technology engage with overseas commercial aerospace chains, related revenue shares remain extremely low. Analysts suggest that entering SpaceX's demanding supply chain signals product reliability and quality systems meeting international high standards—a capability replicable in China's domestic commercial aerospace development to enhance bargaining power within the local chain. However, SpaceX develops most core components in-house, procuring only peripheral parts. In contrast, China's commercial aerospace supply chain is in a '1 to 10' stage: foundational frameworks exist but lack maturity, with rocket costs and reuse rates still trailing SpaceX. Domestic firms are reducing costs and improving efficiency by optimizing supply chains, introducing AI simulation, and using 3D-printed parts. A few companies, like Sirui New Materials, have achieved volume supply of key materials for rocket engines.