Concentrated Matte Black Liquid Ink

Liquid Ink for Buyers Who Cannot Accept Tone Variation Between Batches

Premium liquid ink buyers face a specific, recurring failure: the ink they reorder three months later is not the ink they approved the first time. A studio that builds a product line on one tone finds the next shipment visibly warmer or flatter; a distributor sells the same SKU twice and receives a different customer reaction each time. Small-volume premium inks avoid part of this problem by producing in tiny runs, but they do it at prices and package sizes that exclude larger programmes. Professional artists and distributors therefore need a different combination: deep matte black tone, consistency between batches, and supply volume that supports a real product line.

Gu Mo Craft Technology produces this concentrated matte black liquid ink through a proprietary soot refining process, and treats tone consistency as a production control rather than a marketing phrase. Every production batch is tone-matched against a master reference standard in the company's tone-matching lab before it leaves the facility, and a tone consistency certificate ships with every order. The result is an ink a distributor can re-order with confidence: the tone your customers saw in batch one is the tone they will see in batch two, with the certificate in the box as the record.

What This Ink Is, and Who It Serves

The ink is a concentrated liquid ink made from refined soot, formulated for a deep matte black tone rather than a gloss or grey cast. Concentration matters for two buyer types in particular:

• Professional artists and calligraphers who need deep black density for large-format brush work and cannot tolerate a washed-out or glossy line, especially when working at exhibition or collection scale.
• Premium art supply distributors and studios who build their own labelled product lines on top of a supplier ink and need the same tone every reorder, plus the option of custom labels and gift boxes for retail presentation.

The product is available in 250ml and 500ml bottles. The two sizes serve different points in the supply chain: 250ml suits studio counters and retail shelves where artists try a product before committing, while 500ml is the working size for studios and institutions that consume ink steadily. Orders can mix the two sizes within one shipment, and the minimum order quantity counts them together.

Key Features

• Concentrated refined soot formula delivering a deep matte black tone with the density premium brush work demands.
• Per-batch tone matching against a master reference standard, so batch two looks like batch one.
• Tone consistency certificate with every shipment — the batch's matching record travels with the goods, not just in the supplier's files.
• Acid-free archival quality, lightfast grade 5 for work that is stored, displayed or collected long-term.
• Two volume formats, 250ml and 500ml, mixable within one order.
• Custom label and gift box options for distributors building retail-ready branded lines.

Specifications

If your programme depends on a specific tone target, send a reference sample of the tone you expect. A tone-matched sample batch can be produced within 15 days of receiving the reference, so the tone you approve at the sample stage is the tone your order is matched against in production.

Tone Matching: How Consistency Is Actually Controlled

Tone consistency is the hardest promise in liquid ink, and it is the one this product is built around. The company operates a tone-matching lab equipped with master reference standards — physical tone benchmarks held at the facility — and each production batch is compared against the master before release. Three linked controls support the result:

• Tone matching — every batch is checked against the master reference so the matte black stays where the first approved sample put it.
• Density testing — concentration is measured per batch, because a tone can look right while carrying the wrong working density.
• AQL inspection — the finished batch is accepted or rejected under a sampling plan, not released on a spot check.

The tone consistency certificate included with each shipment closes the loop for the buyer: on receipt, your QC can compare the delivered batch against the documented reference instead of against memory. For a distributor, this turns tone complaints from an argument into a documented check.

Archival Quality: Acid-Free and Lightfast Grade 5

Two archival properties are confirmed for this ink: it is acid-free, and it is rated lightfast grade 5. Acid-free means the ink does not introduce acidity into the paper it sits on — the property that matters most for works intended to survive decades without the support paper degrading along the ink line. Lightfast grade 5 means the tone resists fading under light exposure, which matters for any work that will be displayed rather than stored in a dark drawer. For buyers selling to artists who sign, frame or sell finished work, these two properties are the difference between a practice ink and an ink a professional can use on a piece that carries their name.

Reference Case: a Japanese Premium Product Line

A professional art supply distributor in Japan ordered 800 bottles of the 500ml format for a premium artist product line. Tone-matched samples were delivered within 12 days, production of the 800-bottle order was completed within 35 days — inside the standard 30–40 day window — and the shipment went out with tone consistency certificates attached. The distributor reported that the ink quality matched their premium brand standard and placed a repeat order. This case is reported from the order record; as with any reference case, your own programme will be confirmed against your specification and tone target the same way.

Company Background

Gu Mo Craft Technology has more than 13 years of experience in soot refining and ink production. The facility includes a tone-matching lab with master reference standards, and the company serves professional artists, painting studios and premium art supply distributors across Japan, Korea and the Middle East. The company exhibits at events including the Tokyo Art Materials Expo and the Shanghai Fine Art Supplies Fair, where tone comparison panels and archival test samples are shown to professional buyers. Liquid ink sits inside a product family that also covers traditional Hui ink sticks, so customers building a full ink programme — traditional sticks for collectors, liquid ink for working studios — can source both from one supplier with one quality standard.

Before You Place the Order: What to Confirm

Liquid ink is ordered against a tone target and a supply plan. To make the first quotation and sample accurate, prepare these points before enquiring:

• The bottle format — 250ml, 500ml, or a mix — and total quantity against the 100-bottle MOQ.
• Whether you have a reference ink whose tone your customers already expect; if so, send a sample so matching starts from your target rather than from a description.
• Whether custom labels or gift boxes are part of the programme, since they are quoted as options.
• Your delivery schedule relative to the 30–40 day production window, and the trade terms you prefer.

Frequently Asked Questions

Can you match a specific tone from our reference ink?

Yes. Send your reference sample and a tone-matched batch can be produced within 15 days of receiving it. The matched tone then becomes the reference your order is produced against.

Is the ink acid-free?

Yes. The concentrated liquid ink is acid-free and rated lightfast grade 5, suitable for archival and display work.

Can we order mixed volumes in one shipment?

Yes. 250ml and 500ml bottles can be mixed in one order, with a combined minimum of 100 bottles across both sizes.

How do I know the next batch will match the first?

Each production batch is tone-matched against the master reference standard before release, and a tone consistency certificate ships with every order so your receiving team can verify the delivered batch.

What testing does a batch go through?

Three controls: tone matching against the master reference, density testing, and AQL sampling inspection of the finished batch.

Do you support private-label packaging?

Yes. Custom labels and gift box options are available for distributors building branded product lines. Confirm the packaging requirement at quotation stage so it is included in the sample and production plan.

How long does an order take?

30–40 days after sample approval. If you are starting from your own reference tone, allow roughly 15 additional days for the tone-matched sample cycle before approval.

Request a Quotation or Tone-Matched Sample

Tell us your bottle format, quantity, tone target and packaging needs — and whether you will send a reference sample. Providing these details together with your delivery schedule helps us review the requirement and prepare an accurate quotation and a sample arrangement that matches your programme.