soluble salt tile supplier china | Contigo Ceramics

Why Soluble Salt Tiles Matter for Commercial Projects

The same soluble salt vitrified tile that sells for $15–20/m² at US distributors costs $4.50–6.00 FOB Foshan. That’s a 60–70% saving before ocean freight. For a mid-sized hotel project requiring 5,000m² of floor tile, sourcing direct from a Chinese factory can save $50,000–70,000.

Soluble salt tiles are a specific category of glazed porcelain tile where color is impregnated into the body using soluble salt solutions before firing. Unlike standard inkjet-glazed tiles where color sits only on the surface, soluble salt tiles achieve through-body color that resists wear, chipping, and edge damage. They’re widely used in high-traffic commercial spaces — hotels, retail shops, airports — where appearance must last.

US imports of glazed porcelain tiles from China reached $1.8 billion in 2025, with soluble salt variants growing 14% year-over-year — USITC Dataweb

How Our Factory Makes Soluble Salt Tiles

At our Foshan facility, we use a Foshan Hope inkjet printer modified for soluble salt application. The process works like this:

1. Body preparation: Porcelain powder is pressed at 3,600–7,800T into the desired shape.
2. Soluble salt application: A concentrated salt solution containing mineral pigments is sprayed or inkjet-printed onto the green tile. The solution penetrates 1–2mm into the body.
3. Firing: Tiles are fired at 1,200–1,250°C in a roller kiln. Heat fixes the salts, creating permanent color throughout the penetrated depth.
4. Finishing: Tiles are polished, rectified, and sorted by shade. Every batch is tested for water absorption (≤0.5%) and breaking strength (≥1,300N).

This technique differs from double charge tiles, where two differently colored powder layers are pressed together. Double charge gives a distinct horizontal color boundary; soluble salt creates a gradient that mimics natural stone or earthy textures. For buyers seeking a sandstone or limestone look with real depth, soluble salt is superior.

Soluble Salt Tile Specifications — FOB Pricing

Prices are FOB Foshan port. MOQ: one 20-foot container (~1,000–1,200m² for 9mm tiles).

Shipping Reality: From China to Your Site

Once production finishes (15–25 days standard), your tile is packed in export cartons, palletized, and containerized at our Foshan warehouse. Typical container options:

• 20-foot container: ~1,000m² of 9mm tile or ~800m² of 20mm outdoor tile. No other charges at origin beyond FOB.
• 40-foot container: ~2,200m² of 9mm tile – better freight cost per m² for larger orders.

Transit times: 25–35 days by sea to US West Coast, 35–45 days to Houston or New York. We recommend using FOB (buyer controls freight and insurance) or CIF (seller arranges ocean freight, buyer handles destination). For first-time importers, we can recommend freight forwarders but never mark up shipping.

Buyer Protections — We Make It Safe

Sourcing factory direct doesn’t mean going unprotected. Every order follows standard trade practices:

• 30% deposit via T/T or L/C, production starts within 48 hours of clearance.
• Free samples (10×10cm or 15×15cm) couriered within 3 working days — you pay ~$30–50 courier fee. Full-size boards available for large projects.
• Third-party inspection (SGS, Bureau Veritas) at your cost, arranged before shipping. We’ll hold shipment until clearance.
• QC report sent with each batch: water absorption, breaking strength, shade uniformity, frost resistance results.

We welcome factory visits — or we can do a live video tour of our production line and testing lab. You speak directly with the production manager, not a sales agent who forwards emails.

“The MOQ for factory-direct soluble salt tiles starts at one 20-foot container — about 1,000m². That’s realistic for a 10–15 room hotel floor or a 2,000sqft retail space.”

FAQ — Real Questions from Importers

1. Are soluble salt tiles frost resistant?
Yes. Our tiles meet ISO 10545-12: 100 freeze-thaw cycles with ≤0.1% mass loss. The through-body color from soluble salt penetration means even if the edge is exposed, no white line appears — unlike standard glazed tiles. We supply such tiles for Canadian balconies and Norwegian commercial entries.

2. How does soluble salt compare to double charge for aesthetics?
Double charge tiles have a sharp horizontal color boundary because two powder layers meet. Soluble salt creates a gradient that fades into the body — ideal for mimicking natural stone veining or earthy “sand texture.” If you want a uniform solid color with true depth, go with soluble salt. If you need distinct layered patterns, double charge may suit better. We offer both and can advise based on your project renderings.

3. Can I get custom colors or sizes?
Yes. Custom colors require adjustment of the soluble salt solution formulation — we do this for orders of 2+ containers. Custom sizes (e.g., 400×800mm or 900×900mm) need new press tooling at approximately $1,500–2,500 one-time cost. Lead time extends by 10–15 days. We’ve produced custom soluble salt tiles for over 20 private-label clients in North America and Europe.

Ready to Source Direct?

You’ve read the specs, seen the pricing, and understand the process. Now take the next step. Request today’s proforma invoice for soluble salt tiles — include your target size, quantity, and port of destination. We’ll respond with a detailed quote within 24 hours.

No middlemen. No hidden markups. Just factory-direct pricing from a certified ISO 10545 manufacturer with 15+ years of export experience.

Request Your Proforma Invoice →

Written by the Contigo Ceramics technical team, Foshan, China.