When configuring product attributes for garden products on Alibaba.com, one of the most common questions Southeast Asian exporters face is: What surface treatment should I offer? The answer depends entirely on your product material—a distinction that many sellers overlook, leading to mismatched buyer expectations and lost opportunities.
This guide provides neutral, educational information about two major surface treatment categories: powder coating (for metal products) and penetrating sealants (for stone and concrete products). Our goal is not to recommend one over the other, but to help you understand which configuration suits your specific product line and target market.
What is Powder Coating? Powder coating is a dry finishing process where electrostatically charged powder particles are applied to a grounded metal surface, then cured under heat to form a hard, protective layer. Unlike traditional liquid paint, powder coating contains no solvents, making it environmentally friendly with minimal VOC emissions.
Key Characteristics:
- Material Compatibility: Aluminum, steel, iron, galvanized steel (METALS ONLY)
- Color Options: 200+ standard colors with custom color matching available
- Finish Types: Smooth, textured, wrinkled, matte, glossy
- Thickness Standards: Typically 60-120 microns (2.5-5 mils)
- Price Range: USD 3.00-6.50 per pound; bio-based coatings command 10-20% premium [1]
What are Stone Sealants? Stone sealants are penetrating treatments designed specifically for porous materials like natural stone, concrete, granite, and marble. They work by soaking into the material's pores to create a water-repellent barrier while allowing the stone to breathe.
Key Characteristics:
- Material Compatibility: Natural stone, concrete, granite, marble, masonry (NON-METAL porous materials)
- Types: Silane siloxane sealers, acrylic sealers, epoxy coatings, penetrating water repellents
- Finish Options: Natural/matte, wet look, color enhancer, high gloss, satin
- Application: Brush, roller, or spray; typically requires reapplication every 2-3 years
- Price Range: USD 16.99-296.00 per gallon depending on brand and coverage [4]
CRITICAL EDUCATIONAL POINT: Powder coating is designed exclusively for metal substrates. It cannot be applied to stone, concrete, wood, or plastic. Attempting to use powder coating on stone garden products would result in adhesion failure and product damage. For stone garden products, the correct surface treatment is penetrating sealants, water repellents, or breathable masonry coatings [3].

