China Testing & Certification International Group Co., Ltd. (CTC, Stock Code 603060) originated from the testing and certification business of China Building Materials Academy in the 1950s. After 70 years of unremitting efforts and persistent pursuit, the company has formed five business categories: detection and testing, certification and evaluation, testing instruments and intelligent manufacturing, measurement and calibration, scientific research and technical services, committed to providing customers with technical services and comprehensive solutions of detection and testing, certification and evaluation, appraisal, consultation, training, and instruments and equipment in fields of quality, environmental protection, green, safety, health, and energy conservation.

Mechanical Draft Cooling Towers
Closed-Circuit Cooling Towers for Refrigeration
Cooling Capacity
Noise
Energy Efficiency
Drift Loss Rate
Appearance (Composite Material Parts, Metal Parts)
Oxygen Index
Zinc Coating Thickness
Flexural Strength
Power Consumption Ratio
Heat Exchanger Pressure Resistance
Operation
Insulation Resistance
Dielectric Strength
Water Distribution System
Fill (Splash Fill)
Mechanical Draft Cooling Towers — GB/T 7190.3-2019
Closed-Circuit Cooling Towers for Refrigeration — JB/T 11530-2013
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