純正

1. Origins, structure, and basic meaning

• Structure: 純正 (じゅんせい) combines purity 純 and correctness 正; with products it marks an item as genuine or manufacturer-approved.
• Basic usage: It describes parts or accessories that meet the original manufacturer's specification.

2. Common pitfalls and similar expressions

• Genuine manufacture, not just pure material
  • In 純正品, the point is origin or approval by the manufacturer, not merely the absence of impurities.