Grading & Specs
8 min read
Qinan grades explained: sinking, semi-sinking and floating
Metrological testing methods, cellular resin saturation thresholds, and why surface colour or polish is never an indicator of genuine sinking density.
RESOURCES & TECHNICAL GUIDES
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ORIGIN: GUANZHU, DIANBAI, GUANGDONG
Guides, grading standards and export briefings.
Practical procurement notes on cultivated Qinan grades, CITES Appendix II paperwork, lab testing and format selection — written by our Guanzhu QC and export team.
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Technical Procurement Briefings
Peer-reviewed metrological notes
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Standard Trade Dossiers
Matrix specs & batch forms
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CITES Appendix II Clearance
Forestry origin verified batches (Source A)
METROLOGY ARCHIVE № 042
CALIBRATED 20°C H₂O
Grade I: Sinking (沈水)
> 1.00 g/cm³
Grade II: Semi-Sinking (半沈)
0.85 – 0.98 g/cm³
Grade III: Floating (浮水 / 熏料)
< 0.85 g/cm³
COMPARATIVE DENSITY SPECIMEN · BATCH STRATIFICATION
VERIFIED GUANZHU QC
GRADING & SPECS · 8 MIN READ
Qinan grades explained: sinking, semi-sinking and floating.
How resin density, water immersion tests and batch records determine commercial grade — and why colour alone misleads buyers in open marketplace trading.
Key Metrological Criteria:
- Density calculation over external visual pigmentation
- Zero microcrystalline wax or synthetic surface impregnations
- Hydro-immersion verified and certified per lot packaging
Showing 6 peer-reviewed technical articles for institutional procurement
CITES & Export
9 min read
CITES export guide: documents and timelines for cultivated agarwood
Step-by-step export protocols under CITES Appendix II for cultivated agarwood (Source Code A), covering forestry origin dossiers, ~90-day timelines, and destination import requirements.
Buying Guides
6 min read
Bracelet buying guide: bead tolerances, stringing and grade cards
Calibrating CNC lathe millimeter precision, grain alignment, non-destructive water testing, and authenticating unvarnished botanical patina.
OEM & Testing
7 min read
How to read an oud oil COA and GC-MS report
Demystifying agarotetrol indices, b-agarofuran and sesquiterpene fractions while detecting adulterant carriers like DPG, TEC or paraffin.
OEM & Testing
5 min read
Incense formulation notes: Qinan powder ratios and natural binders
Calibrating micro-pulverized 80–120 mesh heartwood with cold-pressed Phoebe nanmu bark binder to achieve uncompromised pyrolytic aroma.
CITES & Export
8 min read
Importing agarwood into GCC, EU and North America: customs checklist
Regulatory harmonized tariff codes (1211.90.99 / 3301.90), quarantine fumigation protocols, and port-of-entry botanical import declarations.
OFFICIAL DOCUMENTATION & SPECIMENS
Standard B2B Reference Pack
Direct access to our current trade matrices, regulatory checklists, and verification frameworks for commercial procurement desks.
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MATRIX
Product Overview & Spec Matrix
Format benchmarks, MOQs, lead times, and pyrolytic fragrance profiles across raw chip, bead, oil and powder tiers.
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PROTOCOL
CITES & Export Readiness Checklist
Pre-clearance customs dossier preparation, quarantine fumigation certificates, and botanical origin records.
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FRAMEWORK
Sample COA & Batch Record Framework
GC-MS terpene scan layout, hydrostatic density test sheet, and Dianbai artificial plantation batch traceability sample.
Verification
Live Metrology Verification
Schedule a 20-minute calibrated digital microscope and hydro-immersion density session with our Dianbai QC engineers.
Evaluation
Mixed Evaluation Kits
Standardized 50g benchmark boxes spanning sinking, semi-sinking, and burner grades for in-house laboratory trials.
Direct Desk
Direct Agronomy Inquiries
Inquire directly with Guanzhu plantation managers regarding multi-year forest yield forecasts and export batch allocations.
COMMERCIAL INQUIRIES & TENDERS
Need batch specs for a live tender or brief?
Ask our direct trade desk for format recommendations and physical samples. All consignments are accompanied by CITES Appendix II artificial propagation clearance.
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Direct courier dispatch + CITES Appendix II cultivated export documentation supported