Qingdao Haiang HVAC Equipment Co., Ltd.,

Qingdao Hiounce HVAC Equipment Co., Ltd., established in 1958, specializes in the R&D and manufacturing of gas-fired combination boilers, condensing boilers, and modular boilers—with an annual output of 120,000 units. In partnership with Italy’s Cosmo Group, the company is committed to delivering international-standard, high-quality, low-carbon, and environmentally friendly gas thermal energy equipment solutions.

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Quality

Eight-Step Quality Inspection Ensures Flawless Performance

POP

Ignition System Inspection

Ignition Success Rate: 100% (per National Standards)

RP

Flame Performance Inspection

Stable flame with a blue hue; flame intensity is smoothly and freely adjustable without obstruction.

CP

Gas-Tightness Inspection

Excellent overall gas-tightness—completely prevents gas leakage and ensures safe operation.

FLP

Burner Inspection

Rapid flame propagation through the burner, no flashback, and optimal combustion performance.

HI

Heat Exchanger Inspection

Assessment of thermal conversion efficiency and compliance of the water system with standards.

PRP

Safety Device Inspection

High-sensitivity safety devices automatically cut off the gas supply within 30 seconds of accidental flameout to complete protective action.

AP

Appearance Inspection

Unit exterior is clean and free of scratches or blemishes.

WP

Full-System Commissioning Inspection

The unit operates normally; all technical specifications meet national standards, and all required labels and markings are present.