The Tetra Inspection blog is the company's quality control resource hub — practical, field-tested guides on pre-shipment inspections, factory audits, supplier verification, and sourcing strategy, written by an independent third-party inspection network that has completed 32,500+ inspections across 44 countries since 2014. Browse the categories and search below to find the guidance you need before your next production run ships.
Quality Control Blog
Expert insights on quality control, sourcing strategies, compliance standards, and industry best practices to help you protect your supply chain.
Piece by Piece Inspection in China: Cost, Process & When to Use It
Piece by piece inspection China: How to choose the best Inspection agency Piece by piece inspection is a quality assurance process in which each individual piece of a product is inspected for defects before shipment. Because this particular type of QC inspections
Final Inspection: A Complete Guide for Importers
Final inspection is the last step of the manufacturing process. It's usually performed by a third party quality control inspection company. A series of test is performed to ensure that the product is safe and meets all quality control requirements
The Root Cause of The Global Semiconductor Shortage and Its Impact on The Supply Chain
Semiconductors are crucial materials for technology companies. The properties of these materials make them suitable for use in a wide variety
Manufacturing in Turkey: Industries, Costs & Sourcing Guide
A practical guide to manufacturing in Turkey: the country's top export industries, labour costs versus Asia, the pros and cons of nearshoring, and how to quality-control your Turkish suppliers.
Post COVID-19 Supply Chain from Globalization to the Regionalization
In the last year, the world has been rocked by the COVID-19 pandemic. The effects of this crisis were felt in every sector of our lives and business. Our lives have forever been changed through loss and the forced change in our social habits.
Corporate social responsibility of international brands at a textile sweatshop
Corporate social responsibility of international brands following the death of 29 workers at a textile sweatshop in Tangier Morocco
How to Prepare for an ISO 9001 Certification?
To get certified ISO 9001, you need to start by implementing the QMS within your company. There are many providers out there that will bid to facilitate this process for you. But if you follow this simple guide you will not only save yourself some money. But you will gain in-depth knowledge about ho
Sourcing from Vietnam - Trade Agreement with the EU
The 1st of August 2020 marked a new beginning for trade between the EU and Vietnam with a comprehensive trade agreement that came into effect and will open up trade between these two regions and make sourcing from Vietnam a lot easier
Gray Scale (Grey Scale): Meaning & How to Use It
The gray scale (grey scale) is the 1–5 standard inspectors use to grade colour change and staining in textile colour-fastness testing. Here is what each grade means and how to use it.
Amazon FBA Label Requirements: FNSKU, Shipping & Packaging Guide
Amazon FBA label requirements explained — FNSKU label sizes, shipping (box ID) labels, suffocation warnings, and carton limits to keep your shipment from being rejected.
Mold Prevention Strategies: How to Prevent Mold on Products
Mold is a type of fungus that can be categorized as one of the most dangerous microorganisms for your brand. You might be wondering how a seemingly harmless strand of Fungus can affect your brand image.
Proposition 65 (Prop 65): What the Warning Means & Who Must Comply
According to the Prop 65 regulation: “Any person doing business in California who knowingly and intentionally exposes California consumers to one of over 1,000 listed chemicals known to cause cancer or reproductive toxicity must give a “clear and reasonable” warning to those consumers.” Proposition 65 is t
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Tetra Inspection blog: frequently asked questions
What does the Tetra Inspection blog cover?
The Tetra Inspection blog publishes in-depth guides on third-party quality control — pre-shipment inspections, factory audits, supplier verification, social compliance, and product-specific QC checklists — for importers sourcing from China and across Asia.
Who writes the Tetra Inspection blog?
Articles are produced by Tetra Inspection's quality control team and reviewed by the company's founder, drawing on field data from a network of independent inspectors working across 44 countries.
Is Tetra Inspection an independent third-party inspection company?
Yes. Founded in 2014, Tetra Inspection is an independent third-party inspection network that has completed 32,500+ inspections for 2,000+ clients, with flat per-man-day pricing and photo inspection reports delivered within 24 hours.
How do I find a specific topic on the Tetra Inspection blog?
Use the category filters and search box on this page to browse articles by topic — for example pre-shipment inspection, factory audits, or industry-specific quality control guides.