Catalogue facts, connected Google Drive references, official standards pages and public market data are kept in separate evidence classes.
The uploaded 611-page 2017 chain catalogue is the source of record for product family names, model tables and technical drawings. The catalogue itself notes that information may change and current details should be confirmed.
The connected Google Drive search found duplicate searchable versions of the same catalogue, an engineering handbook, conveyor-chain design guides and current manufacturer catalogues. These were used as contextual references only. Competitor technical values and images were not copied into Ever-Power product pages.
ISO and ASME pages were used for current standard status and taxonomy. The ISO 606:2015 page states that the standard remains current and is scheduled for revision. WITS/World Bank pages supplied 2023 HS 731511 import context. iwis maintenance guidance and OSHA guarding rules supported general maintenance and safety context.
catalogue_exact means a value was clearly transcribed from the supplied catalogue. catalogue_ambiguous means a visible value was not reliable enough to publish. web_context supports current terminology or market context. engineering_inference identifies project-specific interpretation requiring validation.