What supports a recommendation.

Exact models, visible sources

We identify the model and the relevant operating configuration. Manufacturer specifications, independent measurements and calculations are different kinds of evidence. The current collection uses official documentation and clearly labeled calculations.

Useful limits

We do not infer sustained output, temperature, safety or long-term reliability from a product listing. If a recommendation depends on information we cannot verify, we say what remains unknown.

Dates and prices

Price snapshots identify the market and check date. Checkout codes, bundles, tax, shipping and availability can change the comparison. Current purchase terms belong to the retailer. Publication dates are not changed merely to make an old article look fresh.

AI assistance and responsibility

AI assists with research organization, drafting and site production. Yuanqiang Leng is responsible for editorial decisions. We check the sources behind published technical claims and retain them with each article.

Commercial interests

We choose the relevant setup before choosing a merchant. Affiliate links will be disclosed when activated. We do not sell a favorable verdict, copy customer reviews or invent testing, ratings, customers or audience figures.

Corrections

Send the article title, the statement in question and a useful source through the contact page. Material corrections receive an updated review date and a clear explanation where needed.