✅ Quality Assurance – Plexus General Trading Limited

At Plexus General Trading Limited, quality is not just a commitment — it is the foundation of everything we do. Whether you are sourcing Gold, Diamond, Cobalt, Columbite, or Tantalite, we guarantee that all products meet the highest international standards for purity, grading, and performance.

🔍 Rigorous Inspection & Testing

Every shipment undergoes strict quality control and third-party testing to ensure product authenticity and compliance with buyer specifications. Our QA procedures include:

✅ Laboratory Analysis Reports
✅ Chemical Composition Testing (ICP-OES, XRF, and Fire Assay for gold)
✅ Purity Verification (e.g., Au 99.99% for gold)
✅ Grading & Certification (for diamonds and gemstones)

We collaborate with recognized laboratories and inspection agencies like SGS, Bureau Veritas, and Intertek to provide independent validation of our products.

📄 Documentation We Provide

Each order is accompanied by full quality documentation, including:

📜 Certificate of Analysis (COA)
📄 Product Specification Sheet
🪪 Certificate of Origin
📦 Packing List & Commercial Invoice
🔍 Inspection Reports (when applicable)

💎 Product-Specific Quality Standards

🔹 Gold:

Minimum Purity: 99.5% to 99.99%
Assay reports provided from certified refineries

🔹 Diamonds:

Graded using the 4Cs (Cut, Clarity, Color, Carat)
Accompanied by GIA or equivalent certificates (upon request)

🔹 Tantalite & Columbite:

Verified Ta₂O₅ and Nb₂O₅ content
Delivered in ore or concentrate form, with consistent moisture and particle size

🔹 Cobalt:

High-grade cobalt concentrate with verified Co% content
Compliant with battery-grade specifications (if requested)

♻️ Ethical Sourcing Guarantee

We follow strict ethical and sustainable sourcing guidelines to ensure:

🌱 No conflict minerals
👷 Fair labor practices
📜 Compliance with international trade and environmental regulations
🤝 Long-term partnerships with verified mines and local suppliers

🛡️ Customer Satisfaction Commitment

💬 Transparent communication before and after sale
📦 Product samples and testing available prior to bulk order
🔄 Refund/replacement policy on verified non-conforming goods
🌍 Global logistics support for safe and timely delivery

📞 Contact Our Quality Control Team

🇹🇷 Turkey Office

📍 Yeni Mahalle, İsmet İnönü Blv. 33010 Akdeniz/Mersin, Türkiye
📞 WhatsApp/Phone: +90 535 409 77 30

🇬🇧 United Kingdom Office

📍 3rd Floor, 14 Castle Street, Liverpool, United Kingdom
📞 WhatsApp/Phone: +44 75 75 80 79 81