Machinery buying guideLast updated October 2026

Resin Line

Reinforces fragile slabs so they can be sold as first choice.

See resin line vendorsPost an RFQ
Price level
Premium
Best to buy
Mar–Apr, Sep–Oct
Top sources
Italy flagBrazil flagChina flag
Automated slab processing line with roller conveyors in a stone factory

Photo: USAID Afghanistan, Public domain

Overview

What it is

A resin line reinforces and fills slabs before polishing. Slabs are dried in an oven, coated with epoxy or polyester resin that penetrates micro-cracks and fills pores, optionally backed with fiberglass mesh, and cured.

It turns fragile, fissured or porous stones such as exotic granites, onyx, travertine and quartzite into sound, polishable slabs, and raises first-choice yield.

Stage
Slab reinforcement before polishing
Process
Dry, resin (often under vacuum), mesh, cure
Resins
Epoxy (granite, quartzite), polyester (marble)
Options
Vacuum impregnation, automatic mesh

Applications

Best used for

  • Granite and quartzite factoriesStandard practice for exotic slabs.
  • Fragile exotics and onyxMakes them safe to handle and ship.
  • Travertine fillingFills holes before honing.
  • Higher yieldMore first-choice slabs per block.

Origins

Which countries to source from

The producing countries that matter for resin line, what each is known for, and a direct link to vendors there.

Timing

Best time of year to buy

Buy around the big fairs: Xiamen and Marmomac Brazil in March, Coverings in April and Marmomac Verona in late September. Makers launch models and offer show pricing.

  1. Jan: normal
  2. Feb: normal
  3. Mar: best time to buy
  4. Apr: best time to buy
  5. May: normal
  6. Jun: normal
  7. Jul: normal
  8. Aug: slower or pricier
  9. Sep: best time to buy
  10. Oct: best time to buy
  11. Nov: normal
  12. Dec: normal
Best time to buy Normal Slower or pricier
  • Italian makers close for about three weeks in August; orders placed in July often slip to September.
  • Chinese makers close for Lunar New Year; order by early December for spring delivery.
  • Large lines are built to order: expect three to nine months from deposit to commissioning.
  • Plan installation for your own slow season so the changeover doesn't cost production.

Import costs

Tariffs and import duties

Base duties for the main import markets, the extra US surcharge by origin, and the trade remedies to check before you quote a landed price.

HS codes

  • 8464.90Other machines for working stone

Base import duty (MFN)

  • United States2%HTS 8464.90, other machine tools for stone.
  • European Union2.2%
  • United Kingdom2%

Importing into the US? Add the 2026 origin surcharge

Section 301 rates in force since 24 July 2026, stacked on the MFN rate above.

  • Italy flagItaly10% min.Section 301 (2026) tops the duty up to at least 10% in total; no surcharge if MFN is already higher.
  • Brazil flagBrazil+37.5% & 30137.5% Section 301 (2026) plus the legacy China Section 301 duty (25% on most stone and machinery lines), on top of MFN.
  • China flagChina+12.5% & 30112.5% Section 301 (2026) plus the legacy China Section 301 duty (25% on most stone and machinery lines), on top of MFN.
  • China-origin machines currently incur a 25 percent Section 301 duty in addition to the 2 percent general duty rate.

Rates checked October 2026. Indicative rates for planning, not a customs ruling. Duties depend on the exact tariff line, origin, trade agreements and the rules in force on the day of entry. Confirm with a licensed customs broker before you price an order.

Before you order

Buying checklist

  1. 1Check oven capacity and drying time.
  2. 2Vacuum or gravity impregnation.
  3. 3Resin handling and fume (VOC) extraction.
  4. 4Automated mesh application.
  5. 5Energy consumption of ovens and curing.

Price level: Mid to high; resin is a significant running cost.

Vendor Network

Ready to source resin line?

Compare verified suppliers, or post an RFQ and let them come to you with quotes.

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