Overlay North America onto China and the latitudes line up in useful ways: Vancouver ≈ Hulunbuir (~49°N), Toronto and Ottawa ≈ Harbin, New York and Washington ≈ Beijing (~40°N), Los Angeles ≈ Xi'an (~34°N), Houston ≈ Shanghai / Hangzhou (~30°N), Havana ≈ the Fujian–Guangdong coast (~23°N), and Mexico City ≈ Hainan (~19°N). Latitude isn't climate destiny, but it's a fast intuition for seasonality and daylight.
For a China→U.S. bridge like Cube-Age, latitude is a quick sanity check on climate-driven demand. Houston sits near Shanghai and Hangzhou's latitude (~30°N) — hot, humid summers that pull cooling, ventilation and moisture-control goods — while the northern U.S. and Canada track China's northeast, where heating and insulation lead. When sourcing seasonal or climate-sensitive SKUs from Chinese factories for U.S. buyers, matching a Chinese production region's climate to the destination latitude is a useful first filter. See China supply chain and the U.S. market overview.
Reference visualization: 天王星地图先锋 (Uranus Maps, WeChat public account). City latitudes verified against standard geographic coordinates. Reproduced with source attribution intact.