How to Import Rock Wool from China: A Complete 7-Step Guide

China is the world’s largest producer of rock wool (stone wool), with manufacturers like Taishi Rock Wool operating 800,000 tonnes of annual capacity across seven production bases. For importers in Southeast Asia, the Middle East, and beyond, buying factory-direct from China can cut 20–40% off the price of domestic or agency supply — if you know the process.

This guide walks through every step of importing rock wool from China, from specification to customs clearance.

Step 1: Fix Your Specification First

Rock wool is made to order, so vague requirements mean wasted time. Before contacting any supplier, define:

Density: 50–120 kg/m³ for exterior wall ETICS; 80–150 kg/m³ for curtain wall and sandwich panel strips; up to 200 kg/m³ for industrial boards
Thickness: typically 30–200 mm
Board size: standard 1200×600 mm (other sizes on request)
Fire rating required: A1 non-combustible (EN 13501-1) is the norm for building use
Facings: aluminium foil, wire mesh or kraft paper — state it explicitly

If your market tests to EN 13162 or ASTM C612, tell the supplier up front. Factories that hold GB/T 25975-2018 (the Chinese exterior-wall standard) can usually provide EN or ASTM reports on request — ask for them before ordering, not after.

Step 2: Choose a Real Factory, Not Just a Trader

Many Chinese “suppliers” are trading companies reselling from unknown mills. Three checks separate factories from middlemen:

Ask for production capacity and the number of lines (a genuine manufacturer can answer instantly)
Request a factory audit or video call from the production floor
Ask for batch test reports with the physical sample — trading companies rarely have them

Our guide on choosing a rock wool manufacturer covers this in depth.

Step 3: Samples and Test Reports

A serious factory sends free samples (usually via DHL/UPS, 5–7 days) with the batch test report. Check the sample against your specification:

Fire rating (A1 classification, reaction-to-fire behaviour)
Thermal conductivity (≤0.040 W/m·K)
Water repellency and moisture content
Dimensional tolerance and surface finish

If the sample matches, keep it as the reference for the production batch.

Step 4: Quotation, Payment and MOQ

A complete quotation should include: unit price (usually per m² or per m³), FOB or CIF terms with the port named, MOQ, production lead time, and payment terms.

MOQ: typically 1×20′ container for boards (about 20–22 tonnes); glass wool rolls from 500 m²
Payment: T/T (30% deposit, 70% against B/L copy) is standard; L/C at sight for larger orders
Lead time: 15–20 days after deposit

Step 5: Production and QC

After the deposit, the factory produces your order to the confirmed specification. Ask for:

Production photos or a video update at the start of your batch
The batch test report for your specific production run (not a generic certificate)
Loading supervision photos of the container

Taishi exports through Geyuan Insulation (Shandong) Co., Ltd., which handles QC and loading supervision as standard practice.

Step 6: Logistics — What a Container Actually Holds

Rock wool is volume-limited, not weight-limited. As a planning rule:

A 20′ container fits roughly 500–650 m² of 50 mm board
A 40′ HQ fits roughly 1,000–1,300 m² of 50 mm board (less for thicker boards)

For smaller first orders, LCL (less than container load) is available — you pay for the cubic metres you use. Confirm whether the price is FOB (you arrange freight) or CIF (the factory arranges freight and insurance to your port); CIF is simpler for first-time importers.

Step 7: Customs Clearance Documents

Rock wool from China is classified under HS code 6806.10 (slag wool, rock wool and similar mineral wools). Your shipment should arrive with:

Commercial invoice and packing list
Bill of lading (or air waybill)
Certificate of origin (ask for Form E if you import into ASEAN countries — it reduces duty)
Batch test report and, where required, fire classification documentation

Check with your local customs broker whether your country requires additional certification for insulation materials — requirements vary by market.

Common Mistakes to Avoid

Ordering without a physical sample — the cheapest quote can hide the lowest density
Accepting a generic certificate instead of a batch report for your production run
Ignoring volume capacity when planning containers
Not specifying facing type, which changes the price significantly

Start Your Import — Factory-Direct

Taishi Rock Wool supplies importers worldwide with consistent A1 rock wool and glass wool. Send us your specification for a factory quotation with test reports, or browse the full product range first. We reply within 24 hours.

Sourcing by market

We export rock wool and glass wool to buyers across Southeast Asia and the Middle East:

Buyer questions we get most

What documents do I need to import rock wool from China?

Commercial invoice, packing list, bill of lading, certificate of origin and the test report for the standard your project requires. Confirm with your customs broker which conformity scheme applies in your market.

Which Incoterms do you quote?

FOB and CIF are the usual options — tell us the destination port and we will quote both so you can compare with your forwarder.

How is the container filled?

Insulation ships by volume, not weight. Ask every supplier for cubic metres per container rather than tonnes, because compression and format decide what actually fits.

About this guide

Who maintains it

This guide is maintained by the Taishi Rock Wool export team in Shandong, China — factory-direct rock wool and glass wool from seven production bases with a combined capacity of 800,000 tonnes a year. Technical questions go straight to the factory rather than to a trading desk: WhatsApp +86 175 6050 1246 or email cliu32626@gmail.com.

Standards and sources referenced

GB/T 25975-2018 — Chinese national standard for rock wool and its products; our production and test reports follow it.
EN 13162 — European product standard for mineral wool, including how thermal conductivity (λ) is declared.
EN 13501-1 — fire classification of construction products; class A1 means non-combustible.
ISO 8301 / ASTM C518 — steady-state thermal conductivity test methods behind any quoted λ figure.
ASHRAE Handbook—Fundamentals — definitions of thermal conductivity and R-value used here.
EURIMA — European Mineral Wool Manufacturers Association, technical guidance on mineral wool performance.
Insulation Institute (NAIMA) — industry technical resources on insulation performance and specification.

Last updated: September 23, 2026

How to Import Rock Wool from China: A Complete 7-Step Guide