Final answer:
The best source of specific information about a product provided by the manufacturer is the product manual or specification sheet, which includes detailed usage instructions, specifications, and maintenance guides.
Step-by-step explanation:
The manufacturer provides product manuals or specification sheets as the best source of specific information about a product. These documents contain detailed instructions for use, safety warnings, specifications, maintenance guides, and contact information for customer support.
They are the authoritative source and are crucial in ensuring correct product use and troubleshooting any issues that may arise.