必须有生产证据
We include a company only when public, credible materials support that it operates production facilities. A product catalogue alone is not enough when manufacturing cannot be established.
只录入官方事实
Company names, locations, products and capabilities are recorded from official or otherwise traceable sources. We do not infer missing specifications.
未知信息留空
Accuracy is more useful than completeness. Every record shows its evidence basis and review date.