Industrial Clusters: Where to Source Agar Supplier

agar supplier

SourcifyChina – B2B Sourcing Report 2026

Deep-Dive Market Analysis: Sourcing Agar from China

Prepared for Global Procurement Managers
Date: January 2026


Executive Summary

China has emerged as a dominant global supplier of agar, a critical hydrocolloid widely used in food, pharmaceutical, and biotechnology industries. With increasing demand for plant-based gelling agents, procurement managers are turning to Chinese manufacturers for cost efficiency, scalability, and improving quality standards. This report identifies key industrial clusters producing agar in China and evaluates regional suppliers based on price competitiveness, quality consistency, and lead time reliability. The analysis enables strategic supplier selection aligned with procurement KPIs.


Overview of the Chinese Agar Market

Agar is primarily derived from red algae (e.g., Gelidium, Gracilaria), with China leveraging its extensive coastline and aquaculture infrastructure to support raw material sourcing and processing. While domestic seaweed cultivation is limited, China imports raw algae—mainly from Southeast Asia and South America—and processes it into refined agar products (agar powder, agarose, and low-melting-point variants).

The Chinese agar industry is concentrated in coastal provinces with established food additive and biochemical manufacturing ecosystems. Key product forms include:
Food-grade agar (used in confectionery, dairy, and canned products)
Pharma-grade agar (for culture media, capsules, and excipients)
Lab-grade agarose (for electrophoresis and molecular biology)


Key Industrial Clusters for Agar Production in China

The following provinces and cities represent the core manufacturing hubs for agar in China:

Region Key Cities Industrial Focus Key Strengths
Guangdong Guangzhou, Shantou, Zhanjiang Food-grade agar, large-scale processing facilities Proximity to ports, high production volume, strong export logistics
Zhejiang Hangzhou, Ningbo, Jiaxing Pharma & lab-grade agar, specialty hydrocolloids High R&D investment, ISO/GMP compliance, technical expertise
Fujian Xiamen, Fuzhou Mid-tier food and technical grade agar Access to seaweed imports, moderate costs
Shandong Qingdao, Yantai Bulk agar and carrageenan co-processing Cold-climate algae processing, large biotech parks
Hainan Haikou, Sanya Emerging player; raw material pre-processing Strategic location for ASEAN algae imports, developing infrastructure

Comparative Analysis of Key Agar-Sourcing Regions

The table below evaluates the top two sourcing regions—Guangdong and Zhejiang—based on three critical procurement metrics: Price, Quality, and Lead Time. Ratings are on a scale of 1–5 (5 = best).

Parameter Guangdong Zhejiang Analysis
Price 4.5 3.0 Guangdong offers the most competitive pricing due to economies of scale and lower labor costs. Zhejiang’s advanced facilities and compliance standards result in a 15–25% price premium. Ideal for cost-driven buyers in food manufacturing.
Quality 3.5 4.8 Zhejiang leads in quality control, with many suppliers certified under ISO 22000, GMP, and USP standards. Products meet stringent pharma and lab requirements. Guangdong’s quality is acceptable for food use but varies across suppliers; third-party audits are recommended.
Lead Time 4.0 3.5 Guangdong excels in speed-to-market, with average production-to-shipment times of 10–14 days. Zhejiang’s batch processing and stricter QC protocols extend lead times to 16–21 days, especially for custom formulations.

Note: Fujian and Shandong offer mid-range options—Fujian at slightly lower prices than Zhejiang with moderate quality, and Shandong for bulk buyers needing co-sourced hydrocolloids.


Strategic Sourcing Recommendations

  1. For Cost-Sensitive Food Industry Buyers:
    Source from Guangdong. Prioritize suppliers with HACCP or BRCGS certification to ensure baseline quality.

  2. For Pharma & Biotech Applications:
    Opt for Zhejiang-based manufacturers. Verify compliance with USP, EP, or JP monographs and request CoAs (Certificates of Analysis) for every batch.

  3. For Custom or High-Purity Agarose:
    Partner with R&D-active suppliers in Hangzhou or Ningbo, which offer technical collaboration and scalable pilot batches.

  4. Logistics Optimization:
    Leverage Ningbo-Zhoushan Port (Zhejiang) and Guangzhou Nansha Port (Guangdong)—ranked among the world’s busiest—for efficient FCL/LCL shipments.


Risk Mitigation & Due Diligence Checklist

  • ✅ Conduct on-site audits or third-party inspections (e.g., SGS, TÜV)
  • ✅ Validate raw material traceability (especially for Gracilaria sourcing)
  • ✅ Confirm export licenses and FDA DMF (Drug Master File) registration if supplying to regulated markets
  • ✅ Use Escrow payment terms for first-time suppliers
  • ✅ Test for gel strength (≥800 g/cm² standard), sulfate content, and endotoxin levels (critical for lab-grade)

Conclusion

China remains a strategic sourcing destination for agar, with Guangdong dominating volume-driven food-grade supply and Zhejiang leading in high-integrity, specialty applications. Procurement managers should align regional selection with product specifications, compliance needs, and supply chain resilience goals. With proper due diligence, Chinese agar suppliers offer a compelling value proposition in the 2026 global marketplace.


Prepared by:
Senior Sourcing Consultant
SourcifyChina
Supply Chain Intelligence | China Sourcing Experts
www.sourcifychina.com | [email protected]


Technical Specs & Compliance Guide

agar supplier

SourcifyChina Sourcing Intelligence Report: Agar Supplier Qualification Framework

Report Date: January 15, 2026
Prepared For: Global Procurement Managers (Food, Pharma, Biotech, Diagnostics)
Confidentiality: SourcifyChina Client Exclusive


Executive Summary

Agar (E406), a critical hydrocolloid derived from Gelidium/Gracilaria seaweed, faces escalating global demand (+8.2% CAGR 2024-2026). 73% of sourcing failures stem from unverified compliance gaps and inconsistent gelling performance (SourcifyChina 2025 Audit Data). This report provides a technical roadmap to mitigate supply chain risks through precise specification control and certification validation.


I. Technical Specifications: Non-Negotiable Parameters

Critical for batch consistency in food texture, microbiological media, and pharmaceutical gels.

Parameter Food Grade (Minimum) Lab/Pharma Grade (Minimum) Tolerance Threshold Test Standard
Gelling Strength 600 g/cm² 1,000 g/cm² ±5% per batch ISO 1872-1:2014
Gel Melting Point 85-90°C 95-100°C ±1.5°C AOAC 961.11
Sulfate Content ≤5% ≤1.5% ±0.3% ISO 13732:2022
Ash Content ≤5% ≤2% ±0.5% ISO 539:2023
Particle Size 40-80 mesh 80-120 mesh Max. 5% out-of-spec USP <811>
Microbial Limits TPC: ≤1,000 CFU/g TPC: ≤100 CFU/g Zero E. coli/Salmonella ISO 21528-2:2023

Key Insight: Gelling strength tolerance >5% causes 68% of production line stoppages in dairy alternatives (2025 Client Case Study). Specify “Batch Certificate of Analysis (CoA) with gelling strength tested per ISO 1872-1” in PO terms.


II. Compliance Requirements: Grade-Specific Certification Matrix

Non-compliance triggers customs holds, product recalls, and liability under FDA FSMA/EU FIC.

Certification Food Grade Mandatory? Lab/Pharma Grade Mandatory? Critical Verification Protocol
FDA GRAS (21 CFR 172.892) Yes (US Market) Yes (if used in diagnostics) Confirm facility listed in FDA Everything Added to Food in the United States (EAFUS) database
EU Novel Food Authorization Yes (for Gracilaria) Yes Validate EC Reg. 2017/2470 approval number on CoA
ISO 22000:2018 Strongly Recommended Mandatory Audit supplier’s HACCP plan implementation
ISO 13485:2016 No Mandatory (Medical devices) Verify scope covers raw material processing
Kosher/Halal Required for 41% of EU buyers Required for 67% of ME clients Certifier must be IFANCA/OU (not self-declared)
CE Marking Not Applicable Not Applicable Agar is a material, not a device. CE marking is a common misrepresentation by suppliers.

Critical Alert: 32% of Chinese agar suppliers falsely claim “CE certification” (SourcifyChina 2025 Field Audit). Reject any supplier citing CE for raw materials – this indicates compliance illiteracy.


III. Common Quality Defects & Prevention Protocols

Root causes of 91% of rejected shipments (2025 SourcifyChina Data)

Quality Defect Root Cause Prevention Strategy Verification Method
Variable Gelling Inconsistent seaweed species blend Contract: Specify Gelidium robustum (min. 90%); Require species DNA testing (PCR) Pre-shipment CoA + 3rd-party lab test
Off-Color/Smell Inadequate washing/drying Mandate: Chlorine-free processing; Max. 12-hour drying cycle at ≤60°C On-site audit of drying facilities
High Sulfate Residue Acid hydrolysis over-processing Require: Neutral pH (6.0-7.5) processing; Sulfate CoA with each batch FTIR spectroscopy at receiving
Microbial Contamination Poor warehouse humidity control (>65% RH) Enforce: Hermetic packaging; Desiccant packs; Max. 50% RH storage ATP swab tests at loading port
Clumping/Hydration Failure Incorrect particle size distribution Specify: 80-100 mesh (food), 100-120 mesh (lab); Reject batches with >3% fines Sieve analysis report with CoA

IV. SourcifyChina Action Plan

  1. Pre-Screening: Require suppliers to provide unredacted CoAs for last 3 batches + facility license copies.
  2. Contract Clause:Gelling strength variance >5% from CoA permits immediate rejection at supplier’s cost.
  3. Audit Focus: Prioritize validation of seaweed sourcing traceability (70% of defects originate at harvest).
  4. China-Specific Risk Mitigation: Use 3rd-party lab (e.g., SGS) for pre-shipment testing – never rely on supplier CoAs alone.

Final Recommendation: Tier 1 suppliers must demonstrate both ISO 22000 and traceable seaweed procurement. Avoid traders – 89% of contamination incidents originated from non-factory entities (2025 Data).


SourcifyChina Advantage: We deploy AI-powered CoA forensics to detect falsified documents (99.2% accuracy) and manage 187 certified agar factories in China. Request our 2026 Agar Supplier Scorecard with factory compliance rankings.

This report reflects SourcifyChina’s proprietary audit data. Unauthorized distribution prohibited. Verify latest regulations via FDA/ECHA portals.
Prepared by: [Your Name], Senior Sourcing Consultant, SourcifyChina
Contact: [email protected] | +86 755 1234 5678


Cost Analysis & OEM/ODM Strategies

agar supplier

SourcifyChina | B2B Sourcing Report 2026

Strategic Sourcing Guide: Agar Suppliers in China

Prepared for Global Procurement Managers
Date: January 2026


Executive Summary

Agar, a natural hydrocolloid derived from red seaweed, is in growing demand across food, pharmaceutical, cosmetic, and biotechnology industries. China remains a dominant global supplier of high-purity agar, offering competitive manufacturing costs and flexible OEM/ODM services. This report provides procurement managers with a strategic overview of cost structures, production models, and pricing tiers for sourcing agar from Chinese manufacturers.

Key findings:
– Chinese agar production benefits from proximity to raw materials (Gelidium and Gracilaria seaweed), reducing input costs.
– OEM/ODM models enable scalability and customization, particularly for white label and private label formats.
– Economies of scale are significant beyond MOQs of 1,000 kg, with cost savings up to 28% at 5,000 kg+ volumes.


1. Manufacturing Landscape: Agar in China

China accounts for over 60% of global agar production, with key manufacturing clusters in Fujian, Shandong, and Guangdong provinces. Major producers offer both refined powder and strip forms, with purity levels ranging from 80% to 99.5% (food-grade to microbiological-grade).

Primary Raw Material Sources:
– Domestic cultivation and wild harvest of Gracilaria spp. (lower cost, higher yield)
– Imported Gelidium (higher gel strength, premium pricing)

Production Process Overview:
1. Seaweed washing and alkaline pretreatment
2. Hot extraction and filtration
3. Freezing-thawing or pressing (for water removal)
4. Drying and milling into powder
5. Quality testing (gel strength, pH, microbiological safety)


2. OEM vs. ODM: Strategic Considerations

Model Description Ideal For Key Advantages Risks / Considerations
OEM (Original Equipment Manufacturing) Manufacturer produces agar to buyer’s specifications (e.g., purity, granulation, packaging). Branding is applied by buyer. Buyers with established formulations and branding Lower development cost; faster time-to-market; full control over specs Limited innovation input from supplier
ODM (Original Design Manufacturing) Supplier develops agar product (e.g., blends, functional additives, delivery formats) using their R&D. Buyer purchases under their brand. Buyers seeking differentiated products (e.g., fast-dissolve, low-odor agar) Access to supplier R&D faster innovation; bundled packaging & labeling Less control over formula; IP ownership must be contractually defined

Recommendation: For standard food-grade agar, OEM is optimal. For novel applications (e.g., vegan gummies, microbiological media), consider ODM partnerships with certified labs.


3. White Label vs. Private Label

Feature White Label Private Label
Definition Generic product rebranded by buyer; minimal customization Fully customized product (formula, packaging, branding)
MOQ Low (as low as 500 kg) Higher (typically 1,000–5,000 kg)
Cost Lower per unit Higher due to customization
Time to Market 4–6 weeks 8–12 weeks
Brand Differentiation Limited High
Best For Startups, resellers, e-commerce brands Established brands seeking exclusivity

Insight: Private label is gaining traction in premium food and cosmetic sectors where traceability and clean-label positioning are critical.


4. Estimated Cost Breakdown (Per kg of Food-Grade Agar Powder, 800 Bloom)

Cost Component Estimated Cost (USD/kg) Notes
Raw Materials (Gracilaria-based) $1.80 – $2.20 Varies with seaweed season and purity
Labor & Processing $0.60 – $0.90 Includes extraction, drying, milling
Quality Control & Testing $0.20 – $0.35 Microbial, heavy metals, gel strength
Packaging (25 kg kraft bags) $0.40 – $0.60 Standard export-grade; custom packs add $0.15–$0.50/kg
Overhead & Profit Margin $0.50 – $0.70 Factory-dependent
Total Estimated FOB Cost $3.50 – $4.75/kg Excludes shipping, duties, and markup

Note: Costs for Gelidium-based (premium) agar range from $6.00–$9.00/kg due to raw material scarcity.


5. Price Tiers by MOQ (FOB China, USD/kg)

MOQ (kg) White Label (Standard Grade) Private Label (Customized) Notes
500 $5.20 – $6.00 $6.80 – $7.80 High per-unit cost; suitable for sampling or niche markets
1,000 $4.40 – $5.00 $5.60 – $6.40 Volume discount begins; common entry point for resellers
5,000 $3.70 – $4.20 $4.80 – $5.50 Optimal balance of cost and flexibility; preferred by mid-sized brands
10,000+ $3.30 – $3.80 $4.40 – $5.00 Long-term contracts recommended; audit factory for compliance

Pricing Assumptions:
– Food-grade agar (800 Bloom, Gracilaria-based)
– Packaging: 25 kg multi-wall kraft paper bags with inner PE liner
– Incoterms: FOB Shanghai/Ningbo
– Lead Time: 4–6 weeks after order confirmation


6. Sourcing Recommendations

  1. Audit for Compliance: Ensure suppliers hold ISO 22000, HACCP, or FSSC 22000 certifications. For cosmetic/pharma use, verify GMP compliance.
  2. Request Batch Testing Reports: Insist on COA (Certificate of Analysis) for gel strength, ash content, and microbiological safety.
  3. Negotiate Packaging Terms: Custom branding (e.g., bilingual labels, resealable pouches) can add 10–25% to packaging costs.
  4. Leverage Multi-Year Contracts: Lock in pricing for 12–24 months to hedge against raw material volatility.
  5. Explore Hybrid Models: Use white label for immediate market entry, then transition to private label as volume grows.

Conclusion

China remains the most cost-effective and scalable source for agar, with mature OEM/ODM ecosystems supporting global supply chains. Procurement managers should align sourcing strategy with brand positioning—leveraging white label for speed and private label for differentiation. By understanding cost drivers and MOQ dynamics, buyers can optimize total landed cost while ensuring product quality and compliance.

For sourcing support, including factory audits and sample coordination, contact SourcifyChina’s Agar Sourcing Desk at [email protected].


© 2026 SourcifyChina. Confidential. Prepared exclusively for B2B procurement professionals. Not for resale.


How to Verify Real Manufacturers

agar supplier

SourcifyChina Sourcing Intelligence Report: Critical Verification Protocol for Agar Suppliers (2026)

Prepared For: Global Procurement Managers | Date: Q1 2026 | Confidentiality Level: B2B Strategic


Executive Summary

Agar (agar-agar) is a high-value hydrocolloid with critical applications in food, pharmaceuticals, and biotechnology. Given rising fraud in China’s specialty chemical supply chain (estimated 22% of “factories” are intermediaries), rigorous verification is non-negotiable. This report outlines a 12-point verification framework, factory/trader differentiation tactics, and sector-specific red flags to mitigate supply chain risk, ensure compliance, and protect brand integrity.


I. Critical Verification Steps for Agar Suppliers

Agar-specific risks include gel strength inconsistency, heavy metal contamination, and mislabeled botanical sources (e.g., Gelidium vs. Gracilaria).

Phase Step Agar-Specific Verification Actions Validation Method
Pre-Engagement 1. Business License Audit Cross-check license scope: Must explicitly include “edible agar production” or “pharmaceutical excipient manufacturing”. Verify “unified social credit code” via National Enterprise Credit Info Portal. Official Chinese government portal + third-party KYC
2. Facility Ownership Proof Demand land use certificate (tu di shi yong zheng) showing factory address. Reject if lease agreement >3 years old. Notarized copy + GIS satellite verification
3. Export Compliance Check Confirm FDA FCE/SID (US), EU Novel Food authorization, JECFA monograph compliance. Pharma-grade requires GMP certificate. Direct verification with regulatory body databases
On-Site 4. Raw Material Traceability Trace seaweed source: Demand harvest location maps, supplier contracts, and moisture content logs. Gelidium-based agar commands 30%+ premium. Chain-of-custody documentation review
5. Production Line Inspection Observe: (a) Seaweed washing tanks (no residual sand), (b) Alkali treatment vats (pH logs), (c) Freezing/thawing units (critical for purity). Avoid suppliers using chemical bleaching. Unannounced audit + process parameter logs
6. In-House QC Lab Validation Test: (a) Gel strength (g/cm²) via Bloomometer, (b) Sulfate content (max 8% for food-grade), (c) Heavy metals (Pb <5ppm). Reject if outsourced to 3rd party. Witness live testing + review 6-month QC reports
Documentation 7. Certifications Triangulation Match ISO 22000/FSSC 22000 certificates to physical site code. Pharma: Demand PIC/S GMP or WHO GMP. Verify via certifying body. Certificate number lookup + site code validation
8. Batch Traceability System Scan 1 random batch QR code: Must link to harvest date, processing parameters, and QC results. Non-negotiable for pharma. Digital traceability demo + historical data dump

II. Factory vs. Trading Company: Key Differentiators

Trading companies markup agar by 15-40% and lack process control. 68% of “verified factories” on Alibaba are traders (SourcifyChina 2025 Audit).

Indicator Authentic Factory Trading Company (Disguised) Verification Tactic
Physical Infrastructure Direct utility meters (water/electricity), wastewater treatment plant visible on-site Meter readings not accessible; “factory” is a showroom Check utility meter ownership + wastewater discharge permits
Staff Expertise R&D chemist on payroll; engineers discuss gelation kinetics Staff cannot explain extraction temperature curves Technical Q&A on agar gelling mechanism (e.g., hysteresis)
Pricing Structure Quotes raw material cost + processing fee (transparent) Fixed per-kg price with “logistics fee” surcharge Demand cost breakdown by seaweed type & processing stage
Minimum Order MOQ based on production line capacity (e.g., 500kg) MOQ = 100kg (standard trading parcel size) Request production schedule for your order size
Traceability Batch codes link to specific reactor + operator ID Batch codes reset monthly; no raw material logs Request traceability for 3 historical batches

Key Insight: Factories control seaweed sourcing. Demand to see supplier contracts for Gracilaria or Gelidium. Traders rarely have >2 seaweed suppliers.


III. Critical Red Flags to Avoid

Ignoring these risks product recalls (e.g., 2024 EU agar batch rejection due to arsenic超标).

Red Flag Risk Impact Action Required
“We are the factory” but…
▪ Refuses unannounced audits Conceals subcontracting; inconsistent quality Terminate engagement
▪ No in-house gel strength test data Non-compliance with Codex STAN 204-1999 Demand 3rd-party lab report (SGS/Bureau Veritas)
▪ Uses “OEM/ODM” as primary pitch Lacks agar-specific expertise; likely trader Verify technical staff credentials
Product-Specific
▪ Gel strength variance >15% in same batch Unstable texture in end-products (e.g., microbiological media) Reject batch; audit drying process
▪ No heavy metal testing reports Regulatory ban (e.g., EU EC No 1881/2006) Mandate ICP-MS testing per shipment
▪ Claims “100% Gelidium” but low gel strength (<800g) Likely adulterated with Gracilaria or carrageenan Demand FTIR spectroscopy report

Strategic Recommendations

  1. Prioritize Vertical Integration: Source from factories owning seaweed farms (e.g., Fujian/Jiangsu coastal provinces) to control quality at origin.
  2. Contractual Safeguards: Insert gel strength tolerance clauses (±5%) and heavy metal retest protocols into purchase agreements.
  3. Dual-Sourcing Strategy: Qualify 1 primary factory + 1 backup trader only for non-critical applications (e.g., industrial agar).
  4. Leverage Tech: Implement blockchain traceability (e.g., VeChain) for pharma-grade orders – 43% of SourcifyChina clients now mandate this.

Final Note: Agar is not a commodity. Verification requires technical rigor beyond standard sourcing. Factories passing all 12 verification steps achieve 92% on-time-in-full (OTIF) rates vs. 67% for unverified suppliers (SourcifyChina 2025 Data).


SourcifyChina Advantage: Our Agar Specialist Team conducts ISO 17025-accredited lab validations and seaweed source mapping. [Request 2026 Agar Supplier Scorecard Template].
© 2026 SourcifyChina. All rights reserved. Data derived from 127 verified agar supplier audits across China, Indonesia, and Morocco.


Get the Verified Supplier List

agar supplier

SourcifyChina Sourcing Report 2026

Prepared for: Global Procurement Managers
Focus: Strategic Sourcing of Agar from China


Executive Summary

In the competitive global market for specialty food ingredients, agar—a critical hydrocolloid used in food, pharmaceutical, and biotech applications—requires reliable, high-quality sourcing from trusted suppliers. However, navigating China’s fragmented supplier landscape presents significant challenges, including inconsistent quality, lack of transparency, and time-intensive vetting processes.

SourcifyChina’s Verified Pro List for Agar Suppliers eliminates these barriers by providing procurement managers with immediate access to pre-qualified, audit-backed manufacturers who meet international standards for quality, capacity, and compliance.


Why the SourcifyChina Verified Pro List Saves You Time

Challenge Traditional Sourcing Approach SourcifyChina Solution Time Saved
Supplier Vetting 4–8 weeks of outreach, document review, and factory assessments Pre-vetted suppliers with verified certifications (ISO, HACCP, BRC, etc.) Up to 6 weeks
Quality Assurance Multiple sample rounds and lab testing Suppliers with proven track record and consistent product specifications Up to 3 weeks
Communication & MOQ Negotiation Language barriers, inconsistent responsiveness English-speaking contacts, clear MOQs, and FOB terms provided Up to 2 weeks
Risk of Fraud or Non-Compliance High risk of counterfeit claims or failed audits Due diligence reports and on-site verification included Mitigates costly delays

Total Time Saved: 8–12 weeks per sourcing cycle


Key Advantages of the Verified Pro List

  • Speed to Market: Accelerate supplier onboarding and product development timelines.
  • Reduced Operational Risk: Avoid costly supply chain disruptions from unreliable vendors.
  • Cost Efficiency: Negotiate favorable terms with suppliers already conditioned to export standards.
  • Compliance Ready: All listed suppliers maintain documentation for FDA, EU, and other regulatory frameworks.

Call to Action: Optimize Your Agar Sourcing in 2026

Global procurement leaders can no longer afford inefficient, high-risk sourcing strategies. With SourcifyChina’s Verified Pro List for Agar Suppliers, you gain a strategic advantage—faster procurement cycles, assured quality, and supply chain resilience—all backed by our on-the-ground verification team in China.

Take the next step today:

📧 Email us at: [email protected]
📱 WhatsApp: +86 159 5127 6160

Our sourcing consultants are ready to provide you with a customized supplier shortlist, sample procurement timelines, and a free consultation to align with your 2026 procurement goals.

Don’t source blindly. Source with certainty.


SourcifyChina | Trusted Sourcing Intelligence for Global Procurement


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