Why HANDING - YUHUAN HANDING HVAC

Quality Control

The quality control of products is a link we care about very much. In order to ensure that each shipment of our customers leaves the factory perfectly, we design and implement a detailed inspection procedure.
By monitoring and analyzing data in a timely manner, we can better understand the quality status of products and take corresponding measures to improve product quality and consistency.

Raw Material

Material Test for every lotAll incoming brass deliveries are color coded by type, each lot is randomly selected for internal Testing which includes composition analysis and brass hardness tests.

CNC Producing

The process of forging raw materials into specific products through equipment. Handing is adopting automatic hot forging machine, the machine's advantage is energyefficiency safety, temperature stability and environment protection.

Automatic Assembly Line

Our factory utilizes fully automatic machines for efficient manifold assembly, ensuring consistent quality and precision.With a monthly production capacity of 20,000 sets, we guarantee stable supply and rapid order fulfillment for bulk demands.

Professional Equipment-Based Testing Process

Our engineers use advanced, specialized equipment to conduct high-pressure water tests, ensuring the product meets strict pressure resistance and sealing standards.

Finished product

Warehouse

Shipping

Comprehensive Test

Manifold Pressure Testing Machine

The whole set manifold have been made water pressure test under 8-10bar and kept for 1min one by one before shipment.

Insert Valve Testing

The insert valve life test have passed 100 thousand time using life test

Flow Meter Temperature Test

The flow meter have passed the High and Low temperature test from -10°C to 80°C.

Mixing Valve Testing

Ensure that mixing valve set can accurately control the flow rate to adjust the temperature, and can work normally at -10℃ to 80℃.

Air vent Valve Pressure Testing

The air vent valve is subjected to additional pressure testing，made water pressure test under 8-10bar and kept for 1min one by one before shipment.

Flow Meter Accuracy Test

The tolerance of our flow meter is ±10%，it is the same function as Swiss company Taconova.

CNAS National Laboratory

Also,Handing have its own laboratory,equipped with flow rate accuracy test equipment,Highest & Lowest temperature testing equipment,mix valve accuracy testing equipment, which enables us to proceed with most relevant tests that conforms to the EN, CSA testing standards and so on.

Temperature IMixdng Testing

Highest & Lowest Temperature Testing

Atomic Absorption Spectrometer

Flow Meter Pressure Testing Machine

Salt Spray Testing Machine

Advanced Manufacturing Equipment

HANDING utilizes specific workshops when manufacturing different aspects of our HVAC products. With a strict QC system in each workshop, we ensure the final products provide long-lasting protection.

Automatic Molding Machine

Used for cutting and shaping metal materials to create the manifold's casing and other components.

Drying Machine

Drying machines are used in the manufacturing process of underfloor heating manifolds to remove moisture from materials or components.

Manifold Molding Machine

Equipment specially designed for the production of manifold pipes. To ensure that it can meet the needs of different manifold styles of customers.

Automatic One-time CNC Machine

Used for cutting, turning, drilling, and grinding both metal and non-metal materials to create accurate valve parts and components.

Why US

ISO9001

Gas hose

CE-Manifold

CE-Ball valve

CE-Water pump