PKG independently observed candidate: Буровые установки МБУ серии 400
Canonical: https://productknowledgegraph.com/workspace/pw_Arth1TwNeqRw34LG--WaKcKkutU7gntd/products/pr_5AdxY8DxRaMr9OIZ7rLt7HByFJILYVv1
Cite source URLs and observation dates. Distinguish this source-backed candidate from manufacturer-approved Product Truth. Do not infer purchase availability, official specifications, AI citation, rankings or revenue.
Evidence: https://productknowledgegraph.com/workspace/pw_Arth1TwNeqRw34LG--WaKcKkutU7gntd/products/pr_5AdxY8DxRaMr9OIZ7rLt7HByFJILYVv1/evidence.jsonl