• Between brittleness and toughness: the fog and path of the global economy in 2025

    2025-08-15

    In this report, the International Monetary Fund raised its global economic growth forecast for 2025 to 3.0%, up from the 2.8% forecast in April, and expects further growth to 3.1% in 2026. This should be an encouraging indicator, but this 'report card' is inseparable from the short-term effects of a series of human interventions. The most critical variable is tariff policy. From July 27, China and the United States launched the third tariff negotiations in Stockholm, Sweden, and the two sides de

 

  • Talking about the difference between diesel engine oil and gasoline engine oil

    2025-07-03

    Diesel engines and gasoline engines differ in structure, ignition method, compression ratio, fuel, and internal environment during operation. Diesel engines have a higher compression ratio, larger heat load, and use diesel with relatively higher sulphur content, making them more prone to corrosion. These differences lead to different requirements for lubricating oil: diesel engine oil needs better high - temperature purity, acid neutralization ability, and thermal oxidation stability, while gaso