When it comes to global sales of consumer-grade 3D printers, Shenzhen, China, takes the lion's share: for every 10 units sold worldwide, a staggering 9 originate from this innovative city. Four Shenzhen-based powerhouses—Bambu Lab, Creality, Anycubic, and Elegoo—have collectively seized control of roughly 90% of the global entry-level 3D printer market, a feat that has earned them the moniker of the "Four Heavenly Kings" within the 3D printing industry. By 2025, China's 3D printer exports had soared to 5.03 million units, marking a 33.2% year-on-year increase. The total export value skyrocketed to RMB 11.354 billion, a remarkable 39.1% surge year-on-year, surpassing the RMB 10 billion threshold for the first time. Data from the National Bureau of Statistics reveals that 3D printing equipment production witnessed a 52.5% year-on-year growth in 2025, outpacing both industrial robots and new energy vehicles to emerge as the fastest-growing sector within advanced manufacturing.