Consolidated Concepts: Combined similar points about zinc/aluminum properties and sacrificial protection into a concise opening statement.

Streamlined Features: Presented the three key features (adhesion, versatility, sealant enhancement) clearly as bullet points.

Integrated Economic Section: Merged the economic discussion points logically.

Clarified Terminology: Used standard terms like "sacrificial anode protection," "service life," "heavy-duty anti-corrosive paints/paints," "cost-effectiveness," "maintenance-free," "epoxy micaceous iron oxide (MIO)".

Removed Redundancy: Eliminated repeated phrases like "long-term economic benefit," "longevity," and redundant descriptions of zinc/aluminum properties.

Improved Flow: Restructured sentences and paragraphs for better logical flow (Principle -> Method Features -> Economics -> Common Practice).

Active Voice & Conciseness: Used active voice and more concise phrasing where possible.

Explicit Conclusion: Clearly stated the common practice of using metal spray + paint at the end.