Quality Proof Your Team Can Review Before Placing an Order
Conglin supports international procurement teams with quality-system certificates, welding qualifications, inspection records and export-ready documents. The goal is simple: help your engineering, purchasing and compliance teams reduce supplier risk before production starts.

Recognized systems for supplier qualification.
When customers compare suppliers, certificates help confirm whether a factory can support controlled production, documented welding, inspection and shipment paperwork. Conglin prepares these documents to make RFQ review faster and more transparent.
Quality Management
Process control for order review, production, inspection, documentation and continuous improvement.
Check itEnvironmental Management
Responsible manufacturing practices and controlled workshop operations.
Check itHealth & Safety
Safety-management support for stable, controlled production environments.
Check itWelding Quality
Welding quality requirements and process documentation for structural projects.
Check itRailway Welding
European welding qualification support for rail transit vehicles and components.
Check itRailway Quality
Railway industry quality management support for transportation-related supply.
Check itAutomotive Quality
Automotive-related supplier qualification support for component projects.
Check itMarine Support
Classification document support for marine, shipbuilding and export projects.
Check itCNAS lab proof that helps customers approve Conglin faster.
Conglin backs project quotations with visible laboratory capability, accreditation proof and inspection records. Overseas procurement teams can review quality evidence before confirming production or shipment.

CNAS approved laboratory capability
Clear CNAS-focused proof gives purchasing, engineering and compliance teams more confidence when they evaluate Conglin as a qualified supplier.


Laboratory Scene
In-house lab environment for material verification.

Mechanical Testing
Property checks for project and standard requirements.

Materials Review
Sample review and technical record support.

Quality Check
Routine verification before documentation release.
How CNAS lab evidence supports your order
RFQ to shipmentConfirm Standards
Review alloy, drawing, standard and inspection requirements before quotation.
Check Materials
Use lab capability to support composition, structure and property verification.
Prepare Records
Organize quality documents that your team can review before approval.
Support Shipment
Provide inspection evidence before packing, loading and export delivery.
More than paper certificates.
For overseas customers, the real value is not a logo on a page. The value is faster supplier approval, clearer quality responsibility and lower risk when the order moves from drawing to shipment.
RFQ Document Support
Share your standard, drawing, end use and destination market. Conglin helps match the relevant certificates and quality files.
Inspection Records
Inspection reports, material documents and traceability records can support customer approval and shipment review.
Customer-Facing Paperwork
Documentation is organized for overseas procurement, engineering and compliance teams that need clear evidence before approval.
Use Conglin’s quality proof to speed up supplier approval.
Send your RFQ, required standard and project background. We will help prepare the certification and quality documents your team needs to evaluate Conglin with confidence.
Our Location
Conglin supports your certification review, drawing confirmation and project communication from Longkou, Shandong, China.
Send Your Drawing or Quality Requirement
Upload drawings, standards, certificate requirements or approval files. Conglin will review the material, processing and documentation path for your project.