To determine whether your product needs a TR CU CoC (Certificate of Conformity) or a TR CU DoC (Declaration of Conformity), the most critical factor is the risk level of your product as defined by the Eurasian Economic Union (EAEU) technical regulations.

Here is a clear breakdown of the differences and how to choose the right one:

⚖️ Core Differences: CoC vs. DoC

🧭 How to Determine Which One You Need

Since the distinction relies heavily on the product's technical specifications and HS code, here are two practical ways to find out:

1. Check the Specific Technical Regulation (TR CU / TR EAEU): Each regulation (e.g., TR CU 010/2011 for Machinery, TR CU 004/2011 for Low Voltage) has appendices that explicitly list which products require a CoC and which are eligible for a DoC.

2. Provide the Product Details: If you share your product name, specific model/technical specs, and HS code, I can help you look up the general classification based on current EAEU standards.

💡 A Practical Example: Industrial Machinery

To illustrate how specs affect the choice, let's look at industrial machinery (governed by TR CU 010/2011):

• Standard / Semi-automatic machines: Usually fall under the DoC (Declaration) category because their risk level is considered manageable through self-declaration.

• High-risk machines: If the machinery is fully automatic, CNC-controlled, self-propelled, or operates at high speeds/capacities, it is strictly required to undergo the CoC (Certificate) process, including rigorous factory audits and testing.

In short: If your product involves complex mechanics, high voltage, pressurized systems, or is intended for children or medical use, it almost certainly requires a CoC. For everyday consumer goods or simple electronics, a DoC is usually sufficient.

If you can provide the specific product details, I can give you a much more precise answer!