Gaopu provides more than 40 sets of nitrogen generators for Foxconn's Apple production lines.

250 m³/h, 99.99% PSA Nitrogen Generator from Suzhou Gaopu Ultra Pure Gas Technology Co., Ltd. is an industrial on-site nitrogen production system that uses PSA (Pressure Swing Adsorption) technology to separate nitrogen from compressed air. It is designed for continuous high-purity nitrogen supply in factories and industrial processes.

PSA nitrogen generators typically operate with two adsorption towers filled with carbon molecular sieve (CMS). Oxygen and other gases are adsorbed while nitrogen passes through, producing high-purity nitrogen continuously.

A 250 Nm³/h nitrogen generator plant usually includes:

1. Air compressor

2. Air dryer (refrigerated or desiccant)

3. Air filtration system

4. PSA nitrogen generator unit

5. Nitrogen buffer tank

6. PLC control cabinet

7. Oxygen analyzer / purity analyzer

These components work together to deliver stable nitrogen output with low operating cost.

• High purity nitrogen 99.99% or higher

• Continuous on-site nitrogen production

• Low operating cost (no cylinders or liquid nitrogen)

• Automatic PLC control with monitoring of pressure, purity, and flow

• Long service life with carbon molecular sieve adsorbent

• Compact skid-mounted design for industrial installation

A 250 Nm³/h system is typically used in:

• Laser cutting & metal processing

• Chemical & petrochemical inerting

• Food packaging (MAP)

• Electronics & semiconductor manufacturing

• Pharmaceutical production

• Oil & gas pipeline purging

Yes — in large electronics manufacturing plants such as those operated by Foxconn for products of Apple, high-purity nitrogen from PSA nitrogen generators is commonly used as an auxiliary or process gas in multiple steps of the production line.

Nitrogen is an inert gas (chemically stable), so it is used to create an oxygen-free or low-oxygen environment during manufacturing. This prevents unwanted chemical reactions such as oxidation and contamination.

Typical purposes include:

During processes like soldering, welding, or heat treatment of electronic components, oxygen in the air can oxidize metals and degrade joint quality. Nitrogen forms an inert atmosphere that reduces oxidation and improves solder joint reliability.

High-purity nitrogen is used to purge oxygen, moisture, and dust from process chambers or cleanroom equipment. This ensures stable manufacturing conditions for sensitive electronic components.

Many materials used in electronics and batteries react with oxygen or humidity. Nitrogen purging protects them by isolating them from air.

Nitrogen may also be used as a process medium to:

• purge pipelines and chambers

• provide pressure for material transfer

• protect surfaces during heating or laser processing

• prevent particle sedimentation or oxidation in process vessels.

In facilities assembling devices such as iPhones:

• SMT solder reflow ovens → nitrogen atmosphere to improve solder quality

• laser welding / cutting → nitrogen shielding gas

• component packaging → nitrogen purging to prevent moisture and oxidation

• cleanroom equipment → nitrogen blanketing and purging

These steps help maintain high yield, stable electrical connections, and long-term reliability of the electronics.