Jiujiang Slate Guide

Jiujiang, in Jiangxi Province, eastern China, is one of the world's most important slate regions. For decades it has supplied two very different industries from the same rock: the billiard trade, which needs perfectly flat, stable table slate, and the roofing trade, which needs thin, dense, frost-proof roof tiles. Much of the slate exported from China comes from here — and it is the source of everything we make.

This guide is about the origin, not the product. It explains where Jiujiang slate comes from and why the geology suits its two main uses; how it is quarried, split and machined; the test data behind the stone; and how to source it directly from the factory — samples, inspection and export packing. Product specifications and buying details live in our two sister guides: the Billiard Slate Guide and the Roofing Slate Guide.

New to the subject? Start with What Is Jiujiang Slate? below. Want the honest comparison before you commit? Jump to Jiujiang Slate vs Spanish, Welsh and Indian Slate. Prefer to see the evidence? The Jiujiang Slate Test Results are public.

This guide is organised into 14 sections, covering more than 80 planned articles on the region, the rock, testing, production and sourcing.

Start Here

• What Is Jiujiang Slate?

  A plain-language introduction to the region, the rock and the two industries built on it — the entry point for every new buyer.

• Why Jiujiang Slate Is Famous Worldwide

  How a small city in Jiangxi became the reference source for billiard slate and roofing slate across 30+ countries.

• How Jiujiang Slate Is Made

  From quarry block to finished slate — the shared journey behind both our roofing tiles and billiard bed panels.

• Jiujiang Slate Test Results

  Our public EN 12326 / ASTM C406 test data: water absorption, flexural strength and freeze–thaw durability.

• Jiujiang Slate vs Spanish, Welsh and Indian Slate

  The honest comparison every importer should read before choosing an origin — properties, price drivers and supply.

01. The Region & Origin

• What Is Jiujiang Slate?

  The plain-English definition of Jiujiang slate — the region, the rock and the two industries built on it.

• Where Is Jiujiang Slate From?

  China → Jiangxi → Jiujiang → Lushan → Xingzi → Hengtang: the geography of the region and the towns at the heart of production.

• The Geology of Jiujiang Slate

  How the metamorphic rock formed, its cleavage and density, and why these properties suit roofing and billiards.

• Lushan, Xingzi and the Slate Belt of Jiangxi

  The historic quarries around Lushan and Xingzi that built the region's reputation for hard, dense slate.

• History of Slate Production in Jiujiang

  From a thousand years of local use to modern export — how Jiujiang became the source for world tables and roofs.

• Jiujiang, Lushan or Xingzi Slate: What's in a Name?

  Why the same stone is sold under different names — and how to make sure you are comparing the same rock.

• Jiujiang Slate Resources and Quarry Reserves

  The scale of the region's quarries and why consistent supply is a key reason buyers choose Jiujiang.

• Jiujiang Slate Map

  China → Jiangxi → Jiujiang → Lushan → Xingzi → Hengtang: the geography of the region, the quarry areas and the transport routes to port.

02. Why Jiujiang Slate Is Different

• What Makes Jiujiang Slate Different?

  Density, water absorption, machining performance and consistency — the four things buyers actually notice.

• Jiujiang Slate Properties Explained

  The physical figures: density, absorption, flexural strength, hardness — and what each one means on the roof or table.

• Jiujiang Slate Density

  Why a dense slate (2.7–2.8 g/cm³) matters for both frost resistance on a roof and flatness on a table.

• Jiujiang Slate Water Absorption

  Low water absorption is the single most important figure for cold climates — and Jiujiang slate's tested values are among the lowest in the industry.

• Jiujiang Slate Flexural Strength

  Bending strength figures for Jiujiang slate and what they prove about durability under wind and snow load.

• Jiujiang Slate Hardness

  Hardness and its role in splitting quality, machining and long-term wear resistance.

• Jiujiang Slate Mineral Composition

  What the stone is made of — and what its mineral composition can tell buyers about durability and weathering.

• Jiujiang Slate Flatness & Dimensional Stability

  The flatness tolerance (±0.1 mm standard, ±0.05 mm precision-ground CNC work) that makes Jiujiang slate the reference for billiard beds.

• Is Jiujiang Slate the Best Slate in China?

  A straight answer to the question every buyer asks — and the honest caveats that come with it.

03. Quarry → Factory → Finished Slate

• How Jiujiang Slate Is Quarried

  Wire saws, block extraction and the selection rules that decide which blocks become roofing or table slate.

• How Slate Blocks Are Extracted

  The technical side of block extraction — drilling, wedging and sawing a block clean out of the mountain.

• The Art of Splitting Slate by Hand

  The hand-splitting skill that lets a block become thin tiles — the step no machine can fully replace.

• From Quarry to Roofing Slate: The Tile Journey

  Splitting, dressing, sizing, drying and packing for roof tile — the roofing side of the process.

• From Quarry to Billiard Slate: The Panel Journey

  Cutting, surface grinding, CNC machining and joint finishing for billiard table panels.

• CNC Machining in Our Jiujiang Factory

  The machines and tolerances behind our precision work — the difference between craft and quality.

• 100% Inspection: How We Check Every Piece

  Flatness, thickness, dimensions and surface — the checks every panel and tile passes before packing.

04. Quality, Testing & Standards

• Jiujiang Slate Test Results

  Our published EN 12326 / ASTM C406 data for water absorption, flexural strength and freeze–thaw.

• How to Read a Slate Test Report

  Water absorption, flexural strength, freeze–thaw, carbonate — what each figure means and what is good.

• EN 12326 and ASTM C406: What They Test

  The two standards buyers reference most — which one fits your project and how to read a certificate.

• Water Absorption: Why It Decides Longevity

  The single most important figure for roofs in cold climates — and what a low number really proves.

• Freeze–Thaw Resistance of Jiujiang Slate

  Why frost cycles are the toughest test for roof tiles, and how our slate performs in the lab and in the field.

• Slate Testing: What Buyers Should Ask For

  The four or five tests that actually matter — and what a supplier should be able to hand you.

05. Jiujiang Slate vs Other Origins

• Jiujiang Slate vs Spanish Slate

  The classic head-to-head for roofing buyers: price, colour range, density and supply.

• Jiujiang Slate vs Welsh Slate

  Heritage appeal vs modern supply — how Welsh and Chinese slate differ in look, test data and cost.

• Jiujiang Slate vs Indian Slate

  Budget vs quality: why Indian slate costs less and what you give up in density and consistency.

• Jiujiang Slate vs Other Chinese Slate Regions

  How Jiangxi compares with other slate-producing provinces in China — and how to spot a re-labelled stone.

• Jiujiang Slate vs Spanish, Welsh and Indian Slate

  The all-in-one comparison table for importers choosing between the four major origins.

06. Jiujiang Slate for Roofing

• Why Roofing Buyers Choose Jiujiang Slate

  Colour range, consistent splitting, tested durability and container pricing — the buyer's view.

• Jiujiang Roofing Slate in Cold and Coastal Climates

  How the stone performs under frost, wind and salt air — with the test data behind it.

• Jiujiang Roofing Slate: Colour and Weathering

  The natural colour range of Jiujiang slate and how it weathers over decades on the roof.

• Jiujiang Slate for Roofing vs Other Origins

  The roofing-focused version of the origin comparisons — which roof, which origin.

• Roofing Slate Guide

  The complete hub: sizes, thickness, grades, installation, cost and buying guides.

• How Is Roofing Slate Made?

  The roofing side of the same rock — splitting, dressing, sizing and packing tiles in our Jiujiang factory.

07. Jiujiang Slate for Billiard Tables

• Why Billiard Table Builders Source from Jiujiang

  Stable rock, consistent density, CNC machining and the tolerance the trade expects.

• Why Jiujiang Slate Works for Billiard Tables

  Flatness, density, stability and machinability — the physical reasons the stone suits a table bed.

• From Jiujiang Quarry to Billiard Table

  The complete journey of a billiard slate, from quarry block to a CNC-machined three-piece table bed.

• Jiujiang Billiard Slate Manufacturer & Exporter

  Our home-town page: factory, capacity and export track record for table slate.

• Billiard Slate Guide

  The complete hub: sizes, thickness, flatness, machining, importing and installation guides.

• How Billiard Slate Is Made

  From quarry block to championship table — mining, splitting, grinding, CNC machining and inspection.

08. Architectural & Building Slate

• Jiujiang Slate Paving & Flooring

  Dense, non-slip slate for outdoor paving, patios, walkways and indoor flooring — sizes, finishes and freeze–thaw performance.

• Jiujiang Slate Wall Cladding

  Natural cleft and dressed slate for feature walls, façades and interior cladding — colour range and fixing methods.

• Paving Slate Sizes & Thicknesses

  Standard paving slab dimensions, thickness by traffic load, and edge finishes for landscape projects.

• Slate Flooring vs Other Stone Flooring

  Slate vs granite vs marble vs porcelain for floors — durability, slip resistance, maintenance and cost.

• Exterior vs Interior Slate Cladding

  How cladding specs change between weather-exposed façades and indoor feature walls.

• Why Jiujiang Slate Works for Paving

  Low water absorption, high density and natural cleft texture — the properties that make this stone suitable for ground contact.

• Jiujiang Slate for Outdoor Architecture

  Paving, cladding, steps and landscape stone for public and commercial outdoor projects.

09. Slate Crafts & Giftware

• Slate Coasters from Jiujiang

  Natural slate coasters — cut, edge-finished and sealed for tabletop protection and gifting.

• Slate Placemats & Tableware Accessories

  Heat-resistant, easy-clean slate placemats, cheese boards and serving slates for hospitality and retail.

• Engraved & Custom-Printed Slate Products

  Laser engraving, screen printing and custom branding on slate — what works and what to specify.

• Slate Signs & House Number Plates

  Weatherproof slate signs and plaques for house numbers, directional signage and memorials.

• Wholesale Slate Crafts from China

  MOQ, pricing tiers, packaging and lead times for wholesale slate giftware buyers.

• Why Jiujiang Slate Is Ideal for Crafts

  Fine grain, clean cleft surface and consistent thickness — the properties that make small products look premium.

10. Buying & Exporting from Jiujiang

• How to Source Jiujiang Slate Directly

  Factory-direct vs trading desks — the sourcing route that saves money and risk.

• How to Verify a Jiujiang Slate Supplier

  Quarry, factory, inspection, packing — the checks that separate a producer from a middleman.

• Factory vs Trading Company: How to Tell the Difference

  The practical signs — licences, quarry access, video, and whether containers load at the factory gate.

• Questions to Ask Before You Buy

  Ten questions that get you specs, test data and a realistic price — fast.

• Samples and Sample Approval

  Why you should always check a physical sample before production, and how to run a fair test.

• How Jiujiang Slate Is Packed and Shipped

  Export crates, pallets, container loading and the packing that survives the ocean.

• Containers, Freight and Delivery from Jiujiang

  20ft vs 40ft loads, the nearest ports on the Yangtze, lead times and how freight affects your landed cost.

• Documents for Importing Slate from China

  Invoice, packing list, bill of lading, test certificates — the paperwork pack for customs.

11. The Jiujiang Slate Industry

• The Jiujiang Slate Industry

  A straight overview of how Jiujiang's slate sector works and how it grew around one abundant rock.

• The Slate Industry of Jiangxi

  The wider Jiangxi picture — where the quarries sit and how the province's slate reaches global markets.

• Jiujiang Slate Supply Chain

  Quarries → factories → export traders — how the chain works and where the margin goes.

• Slate Quarries and Processing in Jiujiang

  The quarries and processing yards that make up the region's slate industry today.

• Jiujiang Slate Export Markets

  Where Jiujiang slate goes — and why buyers across 30+ countries keep coming back.

• Jiujiang Slate: From Local Industry to Global Market

  The story of how a local stone industry became a global supplier of table and roof slate.

• Sustainability of Slate Quarrying in Jiujiang

  Waste management, water use and quarry restoration — the honest environmental picture.

• Jiujiang Slate Project Gallery

  Real roofs and real tables from our factory — the proof in pictures.

12. Field Notes / Production Log

• Jiujiang Slate Field Notes

  Short, dated notes from the quarry and factory floor — selection, splitting, machining and loading days.

13. Jiujiang Slate Gallery

• Jiujiang Slate Gallery

  A continuously updated photo collection: quarry, factory, roofing, billiard, processing and projects.

14. FAQ / Glossary / Resources

• Jiujiang Slate FAQ

  Quick answers to the questions new buyers ask about origin, quality and sourcing.

• Glossary of Jiujiang Slate Terms

  Slate, cleft, headlap, gauge, density — every term you will meet when dealing with suppliers.

• Jiujiang Slate Buyer Checklist

  The pre-order checklist: specifications, test data, samples, packing, payment and delivery terms.

• Jiujiang Slate Resources

  A hub of downloadable references and links to the sister guides and evidence pages.

• Ask a Slate Expert

  Send us your project or enquiry — our factory team answers within one working day.