When sourcing candle holders on Alibaba.com, surface treatment is one of the most critical specifications affecting product positioning, durability, and price point. The two primary categories—polished finishes and coated finishes—serve different market segments and buyer expectations.
Polished finishes refer to mechanically buffed metal surfaces that achieve varying levels of reflectivity. The industry standard for mirror polish is ASTM No. 8 finish, with surface roughness (Ra value) typically between 0.05-0.1 micrometers. This treatment is commonly applied to stainless steel, brass, and aluminum candle holders destined for premium home decor markets.
Coated finishes encompass several protective layer applications including PVD (Physical Vapor Deposition), powder coating, electroplating, and lacquer. Each coating type offers distinct advantages: PVD provides exceptional hardness (1000-4000 HV) with thin film thickness (0.25-5.0µm), while powder coating delivers thicker protection (50-150µm) at lower cost [2].
Surface Treatment Types: Technical Specifications
| Treatment Type | Typical Thickness | Hardness (HV) | Cost Level | Best For |
|---|---|---|---|---|
| Mirror Polished | N/A (base metal) | Base metal hardness | Medium-High | Luxury positioning, display pieces |
| PVD Coating | 0.25-5.0 µm | 1000-4000 | High | Premium durability, color stability |
| Powder Coating | 50-150 µm | 200-400 | Medium | Cost-effective bulk orders, textured finishes |
| Lacquer Coating | 12-25 µm | 15-25 | Low | Budget products, short-term protection |
| Electroplating | 5-25 µm | 150-300 | Medium | Decorative appeal, moderate durability |
For Southeast Asian manufacturers selling on Alibaba.com, understanding these technical distinctions is essential for accurate product listings and buyer communication. Misrepresenting finish type can lead to order disputes and negative reviews that impact seller ratings.

