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  4. GB/T 26704-2022: China's National Pencil Standard — What Every B2B Buyer Should Know

GB/T 26704-2022: China's National Pencil Standard — What Every B2B Buyer Should Know

China's national pencil standard GB/T 26704-2022 defines 17 hardness grades, 5 core performance metrics, and barrel specifications. Here is what B2B buyers need to know — and how it compares to ISO 9177, EN71, and ASTM D4236.

Technical GuideBy David Wu, CEO31 May 20269 min read

Start With Scope, Not a “National Standard” Claim

GB/T 26704-2022 took effect on May 1, 2023. It gives Chinese factories a common quality language, but buyers still need to define the product, test evidence, and destination-market requirements.

GB/T 26704-2022 is a recommended Chinese national standard for wood-cased graphite and colored pencils. It replaced the 2011 edition and covers classification, performance requirements, test conditions, test methods, inspection, marking, packaging, transport, and storage. It does not cover charcoal drawing pencils or special-purpose pencils. The 2022 revision added colored-core lightfastness, phthalate requirements, Method B smoothness, and requirements for additional graphite grades; it also changed several test methods and removed colored-pencil grade classification. For buyers, the edition and scope matter more than a generic “national standard” claim. Name the exact product and acceptance characteristics in the purchase order, request the supplier's test record for that SKU, and keep Chinese factory-quality evidence separate from EN71-3, REACH, CPSIA, or other destination-market obligations.

Why GB/T 26704 Matters for Your Sourcing Decision

A supplier may use GB/T 26704 as its factory QC basis, an internal specification, a buyer specification, or another agreed method. Because GB/T denotes a recommended standard, do not assume every Chinese pencil has been tested to it. Ask which edition, product class, quality level, characteristics, methods, and sampling rule appear in the supplier's report.

When a factory quotes an HB grade, core diameter, barrel tolerance, or eccentricity requirement, ask it to point to the applicable report row. That turns “符合国标” into evidence you can place beside the approved sample and inspection brief.

17 Hardness Grades — The Full Spectrum

GB/T 26704-2022 classifies graphite pencils into 17 grades: 6B, 5B, 4B, 3B, 2B, B, HB, F, H, 2H, 3H, 4H, 5H, 6H, 7H, 8H, 9H. Each grade has defined ranges for tip strength, wear rate, smoothness, density, and Knoop hardness. Key differences buyers should know:

  • 6B–3B: Softer graphite grades. Their darker marks and faster wear may suit some drawing uses, but the buyer should approve writing feel, point life, paper, and sharpening performance for the actual program.
  • 2B–HB: Common writing grades. The exact choice depends on mark darkness, wear, point strength, paper, and the buyer's use case. Do not describe 2B as universally suitable for every optical-mark system without testing that system.
  • F–4H: Hard range. Progressively lighter mark, progressively higher tip strength. Used for technical drawing, drafting, and applications where a sharp point must be maintained through extended use.
  • 5H–9H: Very hard grades with lighter marks and longer point retention. Confirm the intended technical use and approve a physical sample before specifying them.

5 Core Performance Tests — What Your Factory's QC Lab Actually Measures

1. Tip Strength (芯尖受力) — "Will the lead snap when I sharpen it?"

GB/T 26704-2022 section 7.1 prepares the core through a specified aperture and moves the test fixture at 12 ± 1 millimeters per minute until the tip is damaged. The method uses a 1.2-millimeter aperture for colored cores and softer graphite grades from 6B through 3B, and a 0.8-millimeter aperture for grades from 2B through 9H. The measured value is useful only when the sample identity, conditioning, preparation, method, and acceptance requirement are recorded together. Tip strength does not prove that a finished pencil will sharpen cleanly by itself. Core centering, wood, bonding, moisture, and sharpening geometry can also affect breakage. Ask for the test row and inspect finished samples before mass-production approval.

2. Wear / Abrasion (磨耗) — "How long will this pencil last before I need to sharpen it again?"

The wear method uses specified writing paper, a rotating drum, and a grade-specific aperture. The result records the core consumed under controlled conditions. Ask the supplier to state the pencil grade, quality level, method, result, and applicable limit. Do not compare two wear numbers unless the preparation and test conditions are the same.

3. Smoothness (滑度) — "Does it feel scratchy on paper?"

GB/T 26704-2022 includes Method A and the newly added Method B for smoothness. The standard identifies Method A as the arbitration method. If writing feel matters, ask which method produced the reported value and compare it with a signed sample on your intended paper. A method name without the sample and result is not an approval record.

4. Density / Absorbance (浓度) — "Is the mark dark enough?"

The concentration method uses specified drawing paper and optical measurement to evaluate mark density. Higher and lower values are not quality rankings across all grades; they must be read against the grade and quality-level requirement. Put the target in the specification if mark darkness matters to the program.

5. Hardness (硬度) — "Is this really an HB?"

The hardness method reports Knoop hardness with grade-dependent test loads. Use the result to check whether a labeled grade falls within the applicable range. If it does not, stop the approval and investigate formulation, mixing, or labeling before production release.

What Changed in 2022 — And Why It Matters for Your Next Order

The 2022 revision (effective May 2023) introduced six changes that directly affect B2B buyers:

  1. Color core lightfastness added. The 2011 edition did not include this requirement. For a current report, ask which specified colors and exact SKU were tested; do not extend one result to an untested palette.
  2. Phthalate requirements added. For pencils used by students aged 14 or below, GB/T 26704 points to GB 21027 for relevant migratable-element and phthalate requirements. This does not automatically establish compliance with EU REACH restrictions or US CPSIA requirements; confirm the exact SKU and market with an accredited laboratory.
  3. Tip-strength requirements expanded. The revision added ordinary-product tip-strength requirements for additional graphite grades. Ask the report to identify the grade, quality level, result, and applicable table row.
  4. Color pencil grade classification removed. The 2022 edition removed the previous colored-pencil grade classification. If a supplier uses a grade label, ask which edition and report rows support it.
  5. Smoothness Method B added. The revision added Method B, while Method A remains the arbitration method.
  6. Test methods refined across multiple metrics. Wear, density, hardness, core slippage, and eccentricity methods were all revised. If your QC inspector is using a 2011-vintage SOP, the results may not match the 2022 standard.

GB/T 26704 vs ISO 9177 vs ASTM D4236 vs EN71-3 — Quick Cross-Reference

  • GB/T 26704-2022: factory and product quality requirements for in-scope wood-cased graphite and colored pencils, including performance and specified safety references.
  • ISO 9177-1: an international standard with its own pencil-lead scope and methods. Do not assume rows or limits are interchangeable with GB/T 26704.
  • ASTM D4236: chronic-hazard evaluation and precautionary labeling practice for art materials. It is not a pencil performance or lightfastness test.
  • EN71-3: migration requirements for elements in toy materials under its own scope and categories. It does not replace a pencil performance specification.

The GB/T safety provisions apply through GB 21027 to pencils used by students aged 14 or below. Verify the current edition, exact product scope, and laboratory evidence for every standard named in the buyer file.

How to Use GB/T 26704 in Your Supplier Audit

Here are four questions you can ask any Chinese pencil factory — and the answers that should concern you if they get them wrong:

  1. "Which version of GB/T 26704 does your QC lab use?" The current edition is 2022. Ask for the report date, sample description, method, result, and acceptance requirement instead of accepting a verbal answer.
  2. "Which aperture, limit, and report row apply to this HB sample?" The lab should be able to trace its preparation and acceptance rule to the current method. An answer that cannot be tied to the report is a verification gap.
  3. "Can you show me your滑度 report — Method A or Method B?" Method B was added in 2022, while Method A remains the arbitration method. The report should identify the method, sample, result, and applicable requirement.
  4. "Which colored cores were included in the lightfastness report?" The standard applies the requirement to specified colors. Match the tested colors and sample identity to the set you are buying; do not extend one report to an untested palette.

Frequently Asked Questions

Does GB/T 26704 compliance mean the pencils automatically comply with EN71-3?

No. For products used by students aged 14 or below, GB/T 26704 points to GB 21027 for safety requirements. EN71-3 has its own scope, categories, elements, methods, and limits. For EU supply, request evidence for the exact pencil, coating, eraser, and packaging configuration from a competent laboratory; do not treat a GB/T report as an EN71-3 substitute.

What is the difference between普通品 and高级品 in GB/T 26704?

GB/T 26704 separates ordinary and higher-grade graphite-pencil requirements in several performance rows. Higher-grade requirements can be tighter, but the right choice depends on the buyer's use case and acceptance plan. Write the selected quality level and measurable characteristics into the purchase order; do not rely on an English word such as “premium” without the Chinese standard designation.

Is GB/T 26704-2022 recognized internationally?

GB/T 26704 is a Chinese national standard, not an automatic EU or US market approval. ISO 9177-1, EN71-3, REACH, CPSIA, and ASTM D4236 answer different performance, chemical, or labeling questions. Use GB/T 26704 as an agreed factory QC reference, then build destination-market evidence for the exact SKU.

Final Thoughts

Use GB/T 26704 as your factory QC language, then verify destination-market compliance separately. Compare our wooden pencil range or request grade-specific QC reports before approving the order.

Related Reading

  • EN71 vs ASTM D4236: The Complete Guide to Pencil Safety Standards
  • HB vs 2B Pencil Grades: The Complete Guide for Bulk Buyers
  • Pencil Manufacturing Standards — ISO 9177, ASTM D6901, Batch Tolerance Reference
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Article last reviewed 11 July 2026. Specifications and market conditions may change — verify current requirements with our team.

Detailed FAQs

What's the difference between HB and 2B pencil grades, and which should I order?

HB and 2B are the two most widely ordered pencil grades on the European graphite scale. The difference is the ratio of graphite to clay inside the pencil core, which directly affects darkness, sharpening behaviour, and break resistance.

  • HB — approx. 70% graphite / 30% clay. Medium hardness, balanced darkness, holds a point well, resists smudging. This is the universal default for writing, exam pencils, and OMR/bubble-sheet answer pencils.
  • 2B — approx. 55% graphite / 45% clay (inverted ratio). Softer, darker line, smudges more easily, wears down faster. Preferred for sketching, shading, and some Asian-market school systems where darker writing is the standard.

Measurable performance differences (tested per ISO 9180 pencil quality method):

  • Core break resistance: HB typical ≥ 200g force, 2B typical ≥ 150g force (softer cores break earlier under lateral load)
  • Lead wear rate: 2B wears approximately 30–40% faster than HB at equivalent writing pressure
  • Writing darkness (reflectance density): HB ~0.55, 2B ~0.85 (higher = darker)

Decision rules for B2B buyers:

  • European/UK school supply, office writing, bubble-sheet exam pencils → HB (the dominant SKU, 70–80% of Western school-supply mix)
  • Chinese, Japanese, Korean school markets → 2B is the cultural default for primary-school writing (shift to HB from grade 4–5 in some curricula)
  • Art-retail sets, sketching kits → Include both (typical art set: 2H / H / HB / B / 2B / 4B / 6B, 6–8 grades per tin)
  • Promotional/giveaway pencils → HB unless the brand has a specific reason otherwise — it fails less in the hands of casual users

pencilschina.com produces HB, 2B, and the full 9H–9B scale on request. Standard SKUs ship from stock; custom-grade orders have 3,000 pcs MOQ. See the full HB vs 2B grade guide for procurement decision rules by market.

Which graphite grade should I specify for school supply orders?

HB is the universal standard for school examinations, standardized testing, and general classroom writing. It balances darkness and durability — dark enough to read on scanned answer sheets, hard enough to hold a point through a full exam. 2B is darker and softer — preferred for early childhood education (ages 3–6) where lighter writing pressure benefits from darker laydown. We recommend HB as 80% of a school order and 2B as 20% for early-grade supplement.

HB — the school supply anchor SKU:

  • OMR/scantron compatibility — HB graphite reflectance density (~0.55 on ISO 9180 measurement) falls within the detection band of all major optical mark recognition (OMR) scanning systems. A pencil too light (H, 2H) or too dark/smeary (4B+) will produce false negatives or unreadable marks on standardized test sheets.
  • Point retention — HB core hardness (~70% graphite / 30% clay) holds a usable point for approximately 1.5–2× longer than 2B in continuous writing. In a classroom setting where sharpener access is batch-scheduled, this directly reduces classroom disruption.
  • Smudge resistance — HB laydown smudges approximately 40% less than 2B under the same hand-drag conditions, important for left-handed writers and multi-page exam booklets.
  • Global market default — HB represents 70–80% of Western school-supply pencil volume. European, UK, North American, Australian, and Middle Eastern school procurement specifications default to HB. Changing from HB requires a documented justification for most institutional RFQs.

2B — the early-childhood and Asian-market supplement:

  • Lower writing pressure requirement — Children aged 3–6 exert approximately 40–60% of the writing pressure of children aged 7+. 2B's softer formulation (55% graphite / 45% clay) delivers darker laydown at lower pressure, reducing hand fatigue for early writers.
  • Asian curriculum alignment — Chinese, Japanese, Korean, and Taiwanese primary school curricula default to 2B for Grades 1–3 writing instruction. If your school supply programme targets these markets, 2B is the dominant SKU, not the supplement.
  • Trade-offs — 2B wears approximately 30–40% faster than HB at equivalent writing pressure, smudges more readily, and has lower core break resistance (~150g force vs HB's ~200g in lateral load testing per ISO 9180). These are acceptable trade-offs for early-childhood use but would generate complaints in an office or exam context.

Decision rule for importers: For European/UK/Middle Eastern school supply programmes → lead with HB at 80% of volume, add 2B at 20% for early-grade classrooms with a clear "soft grade for ages 3–6" shelf communication to prevent returns from parents who bought the wrong one. For East/Southeast Asian school supply programmes → reverse the ratio (2B at 70–80%, HB at 20–30%). For promotional or general writing use (not school-specific) → HB is the safe default. Our factory produces the full 9H–9B scale; standard school supply grades ship from stock with 3,000 pcs MOQ.

What should I test when evaluating pencil samples before approving bulk production?

A sample evaluation should take 20–30 minutes per SKU and cover 12 checkpoints across four areas: physical construction, writing performance, safety compliance, and labelling accuracy.

Physical construction (6 checks):

  1. Barrel straightness — Roll the pencil on a flat surface. Any visible wobble indicates moisture content variance in the wood; reject if present.
  2. Core centricity — Cut the pencil in half crosswise. The graphite core should be centred within ±0.3mm. Off-centre cores break during sharpening.
  3. Core break resistance — Hold the pencil at both ends and apply lateral pressure until the core snaps. HB should require ≥200g force; 2B ≥150g. Ask the factory for their ISO 9180 test data.
  4. Lacquer adhesion — Scratch the barrel with a fingernail. Paint should not peel in sheets; minor scratch marks are acceptable.
  5. Ferrule crimp (if applicable) — The metal band holding the eraser should not rotate by hand. Loose ferrules are a returns driver.
  6. Eraser performance — Write 5 lines of HB marks, erase completely. Eraser should remove marks cleanly without tearing paper at 80gsm.

Writing performance (2 checks):

  1. Laydown consistency — Write 10 lines at normal pressure. Line darkness should be uniform from tip to 5mm from the wood; no skipping.
  2. Sharpening behaviour — Sharpen with a standard rotary sharpener. Wood should cut cleanly without splintering; core should not break on first sharpening.

Safety compliance (2 checks):

  1. EN71-3 migration test report — Request the test report (not just a certificate) for the specific lacquer colour on your sample. Verify the testing lab is EU-notified and the report is dated within 12 months.
  2. REACH SVHC declaration — Request a written confirmation that no SVHC substances above 0.1% w/w are present in the lacquer, ink, and eraser compound.

Labelling accuracy (2 checks):

  1. Grade marking — Confirm the grade printed on the barrel (HB, 2B, etc.) matches the actual core composition on the factory's raw material specification sheet.
  2. Country of origin — If your import declaration requires "Made in China" marking, verify it is present on the pencil or its retail packaging per your customs requirements.

Document every checkpoint with photos dated the same day as the evaluation. This record becomes your production specification reference if a bulk shipment dispute arises.

Which compliance documents should I mention in a pencil RFQ?

State the destination market and sales channel before asking for documents. Factory-level certificates and product-level test reports are not the same. Factory-level documents such as FSC, BSCI, ISO 9001, and ICS help you qualify the supplier. Product-level reports such as EN71, REACH, ASTM, or CPSIA help you qualify a specific pencil SKU for a specific market.

For supplier qualification, ask whether the certificate holder name matches the company you will contract with. Qingyuan County Hongyun Penindustry Co., Ltd. uses FSC CoC code ESTS-COC-251233, and buyers can use that code as a legal entity anchor when checking chain-of-custody documents. For product qualification, define the product version: graphite pencil or colored pencil set, lacquer or coating, eraser, packaging claim, age grading, and target market. A test report for one formulation should not be assumed to cover every color, coating, or retail pack.

In the RFQ, use direct language: "Destination market: EU retail. Please confirm available factory certificates and whether EN71 or REACH reports apply to this exact SKU." This avoids the vague request for "all certificates," which often returns documents that do not answer the buyer's real compliance question.

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