T/DZJN 439-2025 Active Group standards

T/DZJN 439-2025 High-efficiency central air conditioning system supplier evaluation specification for design, construction, and operation and maintenance

Publish Date: 2025-12-10 Implement Date: 2025-12-18 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: T/DZJN 439-2025

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: Broadcasting and television transmission and reception equipment

ICS Name: Other standards related to the organization and management of companies (enterprises)

Publish Date: 2025-12-10

Implement Date: 2025-12-18

Development Information

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