On July 18, 2025, China's first diesel engine oil D1 standard was released to the world through China Central Television, marking that China's lubricant industry has officially entered the era of independent standards. Behind this milestone is the ten-year persistence of Weichai, a subsidiary of Shandong Heavy Industry, as a core participant - from breaking through foreign technical barriers to building a leading evaluation system, Weichai has promoted China's engineering machinery power system to wear "fitting armor" as a "chain leader".
2025-07-22