Based on the search results, the choice between an EAC Certificate (CoC) or EAC Declaration (DoC) under TR CU 032/2013 depends on risk classification, product type, and operational parameters. Here’s a structured comparison: ⚖️ 1. Core Selection Criteria Factor EAC Certificate (CoC) EAC Declaration (DoC) Risk Category Mandatory for Class 1-2 high-risk equipment: - Pressure vessels >0.001 m³ & >0.05 MPa - Boilers (>110°C or >0.05 MPa steam) - Gas/high-temperature pipelines (DN >25 mm) For Class 3-4 lower-risk equipment: - Liquid-medium pipelines (DN ≤25 mm) - Valves (DN ≤32 mm) Applicant Requirements Open to foreign manufacturers; issued by EAEU-accredited bodies Only EAEU-registered entities (local importer/distributor) Validity Period Up to 5 years (with annual audits for batch production) Up to 5 years (no audits, tied to batches/contracts) ⚙️ 2. Product-Specific Requirements Requiring EAC Certificate (CoC): Pressure vessels: Working pressure >0.05 MPa and volume >0.001 m³ . Boilers: Steam pressure >0.05 MPa or hot water >110°C . Safety devices: Valves, pressure sensors for hazardous media . Gas pipelines: Nominal diameter >25 mm . Requiring EAC Declaration (DoC): Low-pressure liquid pipelines: DN ≤25 mm . Non-critical valves: DN ≤32 mm for non-hazardous media . Exclusions: Medical devices, nuclear equipment, aerosol dispensers