Sourcing Guide Contents
Industrial Clusters: Where to Source China Boiler Tube Factory
SourcifyChina B2B Sourcing Report 2026
Deep-Dive Market Analysis: Sourcing Boiler Tubes from China
Prepared for: Global Procurement Managers
Date: April 2026
Author: Senior Sourcing Consultant, SourcifyChina
Executive Summary
China remains the world’s largest producer and exporter of industrial boiler tubes, serving critical sectors including power generation, petrochemicals, HVAC, and industrial manufacturing. With over 1,200 registered boiler tube manufacturers, China offers a diverse supplier base capable of meeting global quality standards—from ASTM, ASME, and GB to EN and DIN specifications. This report provides a strategic overview of key industrial clusters producing boiler tubes, evaluates regional strengths, and supports procurement decision-making through comparative data on price, quality, and lead time.
The primary regions for boiler tube manufacturing are concentrated in Eastern and Central China, with Jiangsu, Zhejiang, Shandong, and Guangdong emerging as dominant clusters due to advanced metallurgical infrastructure, steel supply chain integration, and export logistics capabilities.
Key Industrial Clusters for Boiler Tube Manufacturing in China
Boiler tubes—carbon steel, alloy steel, and stainless steel types—are precision-engineered components requiring high dimensional accuracy, thermal resistance, and corrosion performance. The following provinces and cities are recognized as core production hubs:
| Province | Key Cities | Industry Focus | Notable Features |
|---|---|---|---|
| Jiangsu | Wuxi, Changzhou, Yixing | High-pressure boiler tubes, alloy & stainless tubes | Strong R&D, ISO-certified mills, proximity to Shanghai port |
| Zhejiang | Huzhou, Hangzhou, Wenzhou | Seamless & welded carbon steel tubes | Cost-competitive, agile SMEs, strong export culture |
| Shandong | Linyi, Jining, Dezhou | Large-diameter & industrial-grade tubes | Integrated steel mills, bulk production capacity |
| Guangdong | Foshan, Dongguan, Guangzhou | Precision tubing, HVAC & process industry tubes | High automation, export logistics, proximity to Hong Kong |
| Tianjin | Tianjin Municipality | Special alloy & nuclear-grade boiler tubes | State-owned enterprises (SOEs), compliance with ASME BPVC |
Comparative Regional Analysis: Boiler Tube Production Hubs
The table below compares four major boiler tube manufacturing regions based on critical procurement KPIs: Price Competitiveness, Quality Consistency, and Average Lead Time. Ratings are derived from 2025 SourcifyChina supplier audits, client feedback, and factory benchmarking.
| Region | Price (1–5)¹ | Quality (1–5)² | Lead Time (Weeks) | Key Advantages | Key Limitations |
|---|---|---|---|---|---|
| Jiangsu | 3 | 5 | 6–8 | Premium quality, ASME/ISO-certified mills, strong QA systems | Higher cost, less flexible MOQs |
| Zhejiang | 5 | 4 | 5–7 | Competitive pricing, agile production, strong SME network | Variable QA across suppliers; requires vetting |
| Shandong | 4 | 3 | 7–10 | Bulk supply capability, low raw material costs | Longer lead times, lower precision in tolerances |
| Guangdong | 4 | 4 | 5–6 | Fast turnaround, automation, strong export logistics | Limited specialty alloy capabilities |
¹ Price (1 = Most Expensive, 5 = Most Competitive)
² Quality (1 = Low, 5 = High – Based on compliance, consistency, certifications)
Strategic Sourcing Recommendations
-
For High-Pressure & Power-Grade Applications:
Prioritize Jiangsu-based manufacturers (e.g., Wuxi Xinda, Jiangsu Yulong) for ASME SA-213 T91, T92, or stainless boiler tubes. These suppliers consistently pass third-party inspections and are preferred by EPC contractors. -
For Cost-Sensitive, High-Volume Orders:
Zhejiang offers the best balance of price and quality. Procurement managers should engage suppliers with ISO 9001 and third-party test reports (SGS, BV) to ensure consistency. -
For Large-Diameter Industrial Boilers:
Shandong factories provide economical solutions for non-critical, low-pressure systems. Ideal for infrastructure and district heating projects. -
For Fast-Turnaround & OEM Integration:
Guangdong is optimal due to proximity to air and sea ports, especially for HVAC and modular boiler system integrators in North America and Europe.
Quality Assurance & Compliance Considerations
Procurement managers must verify:
– Material Test Certificates (MTCs) per EN 10204 3.1/3.2
– Hydrostatic and eddy current testing records
– ASME “U” Stamp or NB certification for pressure vessel compliance
– Factory ISO 9001, ISO 14001, and PED/CE certifications for EU markets
SourcifyChina recommends on-site audits or third-party inspection services (e.g., SGS, TÜV) for first-time suppliers.
Conclusion
China’s boiler tube manufacturing ecosystem offers unmatched scale and specialization. Regional differentiation allows procurement teams to align sourcing strategies with project requirements—whether prioritizing quality, cost, or speed. Jiangsu and Zhejiang emerge as top-tier choices for most international buyers, combining reliability with competitive value.
By leveraging regional strengths and implementing rigorous supplier qualification protocols, global procurement managers can secure high-performance boiler tubes with optimized TCO (Total Cost of Ownership).
Prepared by:
SourcifyChina – Senior Sourcing Consultant
Empowering Global Procurement with Data-Driven China Sourcing
For supplier shortlists, audit templates, or RFQ support: [email protected] | www.SourcifyChina.com
Technical Specs & Compliance Guide
SourcifyChina B2B Sourcing Report: Boiler Tube Manufacturing in China
Prepared for Global Procurement Managers
Date: October 26, 2024 | Valid Through Q2 2025
Executive Summary
China supplies ~65% of global boiler tubes, with significant advancements in precision manufacturing since 2022. However, 22% of non-compliant shipments (per SourcifyChina 2024 audit data) stem from unverified certifications and tolerance deviations. This report details critical technical/compliance parameters for risk mitigation in boiler tube sourcing.
I. Technical Specifications: Key Quality Parameters
A. Material Requirements
| Parameter | Standard Requirement | China-Specific Risk Factor | Verification Method |
|---|---|---|---|
| Base Material | ASTM A210 (Carbon), A213 (Alloy), A178 (Welded) | Substitution of lower-grade alloys (e.g., Q235 instead of 20G) | Mill Test Reports (MTRs) + Third-Party Spectrographic Analysis |
| Chemical Composition | C ≤ 0.25%, Si ≤ 0.50%, Mn ≤ 1.06% (ASTM A210 Gr. C) | Excess sulfur/phosphorus (>0.035%) reducing high-temp strength | Independent lab testing (SGS/BV) |
| Mechanical Properties | Tensile Strength: 325-450 MPa (A210 Gr. C) Yield Strength: ≥180 MPa |
Inconsistent heat treatment causing low yield strength | Hydrostatic testing + Tensile test reports |
B. Dimensional Tolerances (Per ASTM/ASME)
| Dimension | Standard Tolerance | Critical Deviation Risk in Chinese Factories | Acceptance Threshold |
|---|---|---|---|
| Outer Diameter (OD) | ±0.75% (Seamless) ±1.0% (Welded) |
OD > 50mm: 12% of samples exceed tolerance | Reject if > ±1.2% |
| Wall Thickness | +15%/-12.5% | Thin walls at weld seams (welded tubes) | Reject if < -15% |
| Straightness | ≤ 1.6mm/m | Poor coiling causing >3.0mm/m curvature | Reject if > 2.0mm/m |
| Length | +10/-0 mm | Short lengths due to cutting errors | Reject if < nominal length |
Note: Chinese GB/T 3087-2022 aligns with ASTM but allows wider wall thickness tolerances (+18%/-15%). Always mandate ASTM/ASME compliance in contracts.
II. Essential Certifications & Compliance
China-specific certification gaps account for 34% of shipment rejections (SourcifyChina 2024 Data).
| Certification | Relevance to Boiler Tubes | China Factory Compliance Reality | Action Required |
|---|---|---|---|
| ASME Section I & VIII | MANDATORY for pressure parts in US/EU projects | Only 41% of factories hold valid stamps; “ASME-like” certs are common | Verify via ASME.org database; demand U/U2 Code Symbol stamps |
| ISO 9001:2015 | Quality management baseline | 89% claim certification, but 32% have expired/lapsed certs | Audit certificate validity + scope (must include tube production) |
| PED 2014/68/EU (CE) | Required for EU market | CE marks often self-declared without notified body involvement | Demand EU Declaration of Conformity + notified body number (e.g., TÜV 0123) |
| API 5CT | For oil/gas boiler applications | Rarely held; only relevant for specialty tubes | Specify if required; verify via api.org |
| FDA 21 CFR | NOT APPLICABLE (Non-food contact) | Frequently misrepresented by suppliers | Exclude from requirements |
| UL/CSA | NOT APPLICABLE (Electrical safety irrelevant) | Misused to imply general safety compliance | Exclude from requirements |
Critical Insight: Chinese factories often provide “CE” or “UL” certificates for non-applicable products. Always validate certification scope via official databases.
III. Common Quality Defects & Prevention Strategies
Based on 147 factory audits across Jiangsu, Zhejiang, and Shandong (2023-2024)
| Common Quality Defect | Root Cause in Chinese Manufacturing | Prevention Methodology | Verification at Source |
|---|---|---|---|
| Seam Defects (Welded Tubes) | Inconsistent welding speed; poor edge preparation | • Automated TIG welding with real-time arc monitoring • 100% Eddy Current Testing (ECT) |
Witness ECT calibration; review weld logs |
| Scale/Inclusions | Inadequate pickling; contaminated cooling water | • Double-acid pickling (HCl + HF) • Closed-loop water treatment systems |
Inspect pickling line; test water pH/contaminants |
| Dimensional Drift | Worn mandrels (seamless); poor roll alignment (welded) | • Mandrel replacement every 500 tubes • Laser micrometer feedback loops |
Measure tooling wear; check SPC charts |
| Decarburization | Excessive heating time in annealing | • Controlled atmosphere furnaces (O₂ < 0.1%) • Max 15-min dwell time at 900°C |
Thermocouple logs; surface carbon analysis |
| Hydrotest Leaks | Micro-cracks from cold straightening | • Warm straightening (150-200°C) • Post-weld heat treatment (PWHT) |
Witness hydrotest at 1.5x design pressure |
Key Recommendations for Procurement Managers
- Contractual Safeguards: Mandate ASME/ASTM compliance (not GB standards), third-party pre-shipment inspection (e.g., SGS), and liquidated damages for tolerance breaches.
- Certification Verification: Cross-check all certs via ASME.org, EU NANDO, and ISO.org before PO issuance.
- Process Audits: Prioritize factories with in-house NDT labs (ECT, UT) and real-time SPC data access.
- Material Traceability: Require heat-number traceability from billet to finished tube with digital MTRs.
“The cost of a failed boiler tube is 200x the tube price. Invest in verification, not just price.”
— SourcifyChina Supplier Risk Index 2024
Next Steps: Request SourcifyChina’s Pre-Qualified Boiler Tube Supplier List (2024) with audit reports and factory capability matrices.
SourcifyChina: De-risking China Sourcing Since 2010 | ISO 20400 Certified Advisory Firm
Disclaimer: Specifications based on ASTM/ASME 2024 standards. Regulations subject to change; verify with local authorities.
Cost Analysis & OEM/ODM Strategies
Professional B2B Sourcing Report 2026
Prepared for: Global Procurement Managers
Subject: Manufacturing Cost Analysis & OEM/ODM Strategy for China Boiler Tube Factories
Author: Senior Sourcing Consultant, SourcifyChina
Date: March 2026
Executive Summary
This report provides a comprehensive analysis of boiler tube manufacturing costs and OEM/ODM options from certified factories in China. With rising global demand for energy-efficient heating systems and industrial boilers, procurement managers are increasingly evaluating China-based suppliers for cost-effective, scalable, and quality-assured sourcing. This document evaluates white label vs. private label strategies, outlines key cost components, and presents estimated price tiers based on minimum order quantities (MOQs).
China remains the world’s leading exporter of boiler tubes, offering competitive pricing, advanced metallurgical capabilities, and scalable production infrastructure. Strategic sourcing through OEM (Original Equipment Manufacturing) or ODM (Original Design Manufacturing) models enables procurement teams to optimize cost, lead time, and product differentiation.
1. China Boiler Tube Manufacturing Overview
Boiler tubes are critical components in industrial boilers, power plants, and HVAC systems, requiring high thermal conductivity, pressure resistance, and corrosion durability. Chinese manufacturers specialize in carbon steel, stainless steel, and alloy steel tubes (e.g., ASTM A178, A192, A213, A249).
Key production hubs include Jiangsu, Zhejiang, and Shandong provinces, where integrated supply chains and export-focused industrial zones ensure efficient logistics and compliance with international standards (ISO 9001, ASME, CE, PED).
2. OEM vs. ODM: Strategic Sourcing Models
| Model | Description | Advantages | Considerations |
|---|---|---|---|
| OEM (Original Equipment Manufacturing) | Manufacturer produces tubes to buyer’s exact specifications. Branding and design provided by buyer. | Full control over design, materials, and quality. Ideal for established product lines. | Higher setup costs; longer lead times for tooling and validation. |
| ODM (Original Design Manufacturing) | Supplier provides pre-engineered tube solutions. Buyer selects from existing designs and customizes branding. | Faster time-to-market; lower development costs. Suitable for entry-level or volume-driven programs. | Limited design flexibility; potential for product overlap with other buyers. |
Recommendation: Use OEM for high-specification industrial applications requiring traceability and compliance. Use ODM for standard-grade tubes in commercial HVAC or replacement markets.
3. White Label vs. Private Label: Branding Strategy
| Strategy | Definition | Best For | Cost Implication |
|---|---|---|---|
| White Label | Generic product manufactured by a third party, rebranded by the buyer. Minimal customization. | Resellers, distributors, or companies with established brand equity. | Lower per-unit cost; no design investment. |
| Private Label | Fully customized product (dimensions, materials, packaging) under buyer’s brand. | Companies seeking product differentiation and long-term market positioning. | Higher MOQs and unit cost; includes R&D and tooling fees. |
Note: In boiler tube sourcing, “private label” often includes OEM manufacturing with exclusive design rights, while “white label” aligns with ODM models.
4. Estimated Cost Breakdown (Per Unit – 2-inch OD Carbon Steel Tube, 6m Length)
| Cost Component | Description | Estimated Cost (USD) |
|---|---|---|
| Raw Materials | Carbon steel billets, alloys, anti-corrosion coatings | $42 – $58 |
| Labor & Processing | Tube rolling, heat treatment, straightening, testing | $18 – $25 |
| Quality Control | NDT (Non-Destructive Testing), hydrostatic testing, certification | $6 – $10 |
| Packaging | Wooden crates, anti-rust paper, export labeling | $4 – $7 |
| Overhead & Profit Margin | Factory overhead, logistics coordination, margin | $8 – $12 |
| Total Estimated Cost | $78 – $112 |
Note: Final FOB price includes 5–10% buffer for currency fluctuation and logistics volatility (2026 forecast).
5. Estimated Price Tiers by MOQ (FOB China, USD per Unit)
| MOQ (Units) | Price per Unit (USD) | Key Benefits | Supplier Requirements |
|---|---|---|---|
| 500 | $115 – $135 | Low commitment; ideal for market testing | Standard tooling; shared production line |
| 1,000 | $100 – $115 | 10–15% savings; preferred by mid-tier buyers | Dedicated batch; custom QC checklist |
| 5,000 | $85 – $98 | Optimal cost efficiency; long-term contracts advised | Exclusive mold/tooling; 60-day lead time |
Pricing Notes:
– Prices based on carbon steel boiler tubes (ASTM A192, 2″ OD x 0.25″ wall x 6m length).
– Stainless steel (e.g., TP304/TP316) adds 30–50% to unit cost.
– Custom lengths, coatings (e.g., galvanization), or NACE compliance increase cost by 15–25%.
6. Strategic Recommendations
- Leverage Tiered MOQs: Start with 1,000-unit orders to balance cost and risk. Scale to 5,000+ for stable supply chains.
- Audit Suppliers: Conduct on-site factory audits or use third-party inspection services (e.g., SGS, Bureau Veritas) pre-shipment.
- Negotiate Payment Terms: Use 30% deposit, 70% against BL copy to mitigate financial risk.
- Secure IP Protection: For private label/OEM, sign NDA and design ownership clauses in contracts.
- Plan for Logistics: Factor in 20–30 days sea freight from Shanghai/Ningbo to EU/US ports (2026 rates: $1,800–$2,400 per 20′ container).
Conclusion
China’s boiler tube manufacturing ecosystem offers global procurement managers a competitive advantage in cost, quality, and scalability. By strategically selecting between white label and private label models—and optimizing MOQs—buyers can achieve significant savings while maintaining compliance and brand integrity. OEM partnerships are recommended for high-spec applications, while ODM/white label solutions suit volume-driven distribution channels.
SourcifyChina advises initiating supplier shortlisting with pre-qualified factories in Jiangsu and Shandong, focusing on ISO-certified producers with export experience to North America and Europe.
Prepared by:
Senior Sourcing Consultant
SourcifyChina
Your Trusted Partner in China Sourcing Intelligence
March 2026
How to Verify Real Manufacturers
SourcifyChina B2B Sourcing Report 2026: Critical Verification Protocol for China Boiler Tube Manufacturers
Prepared For: Global Procurement Managers in Energy, Industrial Manufacturing, and Power Generation Sectors
Date: January 15, 2026
Confidentiality: For Internal Procurement Use Only
Executive Summary
Boiler tubes represent a safety-critical component with zero margin for error. Substandard materials or manufacturing processes directly risk catastrophic failures (e.g., explosions, unplanned downtime, regulatory penalties). This report outlines a non-negotiable verification framework to identify true manufacturers versus trading intermediaries, mitigate supply chain risks, and ensure compliance with ASME, ASTM, EN, and GB standards. Verification is not optional – it is a liability imperative.
Critical Verification Steps: True Manufacturer vs. Trading Company
Phase 1: Pre-Engagement Documentation Audit (Non-Negotiable)
Reject suppliers failing any step below.
| Verification Step | Required Evidence | Verification Method | Failure = Immediate Rejection |
|---|---|---|---|
| 1. Legal Entity Validation | – Original business license (营业执照) showing “Production” scope – Land ownership certificate (土地使用证) or long-term factory lease |
Cross-check license # on National Enterprise Credit Info Portal | Supplier provides only trading license or “technical service” scope |
| 2. Production Capacity Proof | – 3+ years of utility bills (electricity/water) matching factory address – Equipment list with serial numbers + purchase invoices |
Verify utility provider contacts; demand equipment photos showing serials | Inconsistent utility usage; refusal to share invoices |
| 3. Technical Capability | – In-house metallurgical lab certification (e.g., CNAS) – Process flowcharts for tube drawing, heat treatment, NDT |
Request lab accreditation copies; validate testing protocols against ASTM A213/A269 | Reliance solely on 3rd-party labs; vague process descriptions |
Phase 2: On-Site Verification Protocol (Mandatory)
Conduct unannounced audit with independent technical expert.
| Focus Area | Critical Checks | Red Flag Indicators |
|---|---|---|
| Factory Operations | – Raw material (billets) traceability logs – In-process heat treatment records (time/temp logs) – Direct observation of tube drawing/rolling |
Staged “showroom” workshop; operators lack technical knowledge; no raw material stock |
| Quality Control | – Real-time NDT (UT/ET) reports matching production batches – Calibration logs for testing equipment – Rejection rate data (demand 12-month trend) |
Reports generated after audit request; no calibration stamps; refusal to share failure data |
| Workforce | – Verify 5+ direct production staff IDs against payroll records – Interview shift supervisors on process parameters |
Staff unable to explain tolerances; payroll shows <10 production workers for claimed capacity |
Phase 3: Post-Verification Safeguards
| Action | Purpose |
|---|---|
| Pilot Order with Full Traceability | Tube bundles must include heat numbers + full material certs (MTRs) for every tube |
| Contract Clause Enforcement | Include right-to-audit clause + penalty for subcontracting without consent |
| Third-Party Validation | Pre-shipment inspection by SGS/BV using destructive testing (e.g., IGC, grain size) |
Trader vs. Factory: 5 Definitive Differentiators
Trading companies increase cost, delay, and quality risk – unacceptable for safety-critical components.
| Indicator | True Factory | Trading Company (Red Flag) | Verification Action |
|---|---|---|---|
| Business License Scope | Explicitly lists “production” (生产) of seamless/welded tubes | Lists “trading,” “import/export,” or “technical services” only | Check Line 2 of license for 生产资质 |
| Raw Material Sourcing | Owns scrap yards/billet storage; shows purchase contracts from steel mills | Cannot provide mill certs for raw materials; vague sourcing | Demand billet mill certs + storage photos |
| Equipment Ownership | Equipment titles/leases in company name; maintenance logs | No equipment invoices; “leased” machines with no access | Inspect maintenance logs for owned machinery |
| Pricing Structure | Quotes based on material + processing cost (e.g., RMB/kg + processing fee) | Quotes flat price with no cost breakdown; “best price” rhetoric | Demand itemized cost model |
| Technical Responsiveness | Engineers discuss tolerances, heat cycles, NDT parameters directly | Redirects to “technical team” after initial contact; generic answers | Require process engineer on-site during audit |
Critical Red Flags: Immediate Disqualification Criteria
Do not proceed if any red flag is present.
| Severity | Red Flag | Rationale |
|---|---|---|
| CATASTROPHIC | Refuses unannounced on-site audit | Hides subcontracting, capacity gaps, or non-compliance; 92% of refusals indicate fraud (SourcifyChina 2025 Data) |
| CATASTROPHIC | No in-house heat treatment facility (relies on 3rd-party) | Inconsistent process control; impossible to validate critical metallurgical properties |
| CRITICAL | MTRs lack heat number traceability to individual tubes | Zero batch accountability; illegal per ASME Section II Part A |
| CRITICAL | Quotation excludes TP347H/TP321 stabilization requirements (if applicable) | Guarantees premature failure in high-temperature service; violates ASME BPVC |
| HIGH RISK | Uses Alibaba “Gold Supplier” badge as primary credibility proof | Alibaba verification only confirms business registration – not production capability |
Conclusion & Strategic Recommendation
Procurement managers must treat boiler tube sourcing as a risk mitigation exercise, not a cost exercise. Trading companies introduce unacceptable opacity in safety-critical supply chains. Mandatory actions:
1. Enforce Phase 1 documentation audit before sharing RFQs.
2. Budget for unannounced technical audits – this is non-negotiable insurance.
3. Require full material traceability in contracts (heat number → billet → final tube).
The cost of verification is 0.7% of potential liability exposure from a single failed boiler tube (SourcifyChina Risk Model 2025). There are no shortcuts.
SourcifyChina Advisory: 78% of “verified factories” on Alibaba fail Phase 1 documentation checks. Partner with a sourcing agent possessing in-house metallurgical expertise – not just supply chain coordinators.
This report reflects SourcifyChina’s proprietary verification methodology. Data sources: ASME BPVC 2025, China NBS Manufacturing Survey, SourcifyChina Audit Database (2020-2025).
© 2026 SourcifyChina. All rights reserved. For procurement use only – not for public distribution.
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Professional B2B Sourcing Report 2026
Prepared for Global Procurement Managers
Optimizing Supply Chain Efficiency in Industrial Components Sourcing
Strategic Advantage: Streamlined Sourcing of China Boiler Tube Factories via SourcifyChina’s Verified Pro List
In the competitive landscape of industrial component procurement, time-to-market, quality assurance, and supply chain resilience are paramount. Sourcing boiler tubes from China—home to over 60% of global seamless steel tube production—presents significant cost and scalability opportunities. However, unverified suppliers, inconsistent quality, and prolonged vetting cycles often offset these advantages.
SourcifyChina’s Verified Pro List for “China Boiler Tube Factory” is engineered to eliminate these risks and inefficiencies. Our rigorously vetted network of manufacturers meets international standards (ASME, GB, ASTM, ISO 9001), with documented compliance, production capacity audits, and third-party inspection records.
Why SourcifyChina Saves You Time & Reduces Risk
| Benefit | Impact on Procurement Cycle |
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| Dedicated Sourcing Support | Our team handles RFQs, site visits, and sample coordination—freeing your team to focus on strategy. |
| Proven Track Record | 94% of clients secure qualified suppliers within 10 business days of engagement. |
Call to Action: Accelerate Your 2026 Procurement Strategy
Global supply chains demand speed, precision, and reliability. With SourcifyChina’s Verified Pro List, you bypass the noise of unqualified vendors and gain immediate access to trusted boiler tube manufacturers in China—backed by due diligence you can verify.
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