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A world-leading manufacturer of energy-efficient PSA oxygen generators & nitrogen generators

HUILIN customer service content and service standards
HUILIN Company provides customers with a complete on-site oxygen and nitrogen gas supply solution that are full process, implementable, and accountable. The complete service covers four core stages: pre-sales, in sales, warranty period after-sales, and lifetime value-added services upon expiration of the warranty period. All service content and standards can be directly written into the procurement contract, fully guaranteeing customers' purchasing rights and long-term stable operation of equipment.
 Providing customers with complete oxygen and nitrogen supply solutions.
  Pre-sales, sales, warranty and after-sales service.
  Lifetime value-added services after the warranty period.
Pre-sales Service (Accurate Equipment Selection to Prevent Compatibility Issues from the Source)
1
  Fully Communicate And Confirm Customer Needs
Communicate on-site or online to confirm the accurate parameters of the customer's gas requirements, including gas purity, flow rate, pressure, dew point, and other technical indicators. Whether the gas usage is stable, and whether there are peak valley and peak data. Is there a plan to expand production in the later stage. Is there a requirement for explosion prevention (such as in the chemical industry) and sterility (such as in the medical and food industries). Are there any special requirements for intelligent control. Does the factory have available compressed air. Is the customer's site condition and installation space sufficient? Are the power conditions matched? Are there any other requirements for installation, piping, etc.
2
  Customized Gas Supply Plan+Multi Version Quotation
1. Real-time production progress synchronization
2. Comprehensive factory inspection
3. Professional installation guidance
4. Full-system debugging + on-site testing
5. Tiered Practical Training Services
3
  Service Standard
We ensure rapid response within 2 hours upon request and deliver a comprehensive customized solution, equipment layout drawings, and detailed energy consumption report within 3 working days.
Sales Service (Comprehensive process management to ensure equipment delivery meets all requirements)
Real-time production progress synchronization
Comprehensive factory inspection
Professional installation guidance
Full-system debugging + on-site testing
Tiered Practical Training Services
Real-time production progress synchronization
During equipment manufacturing, the manufacturer regularly updates customers on key milestones such as production processes, component non-destructive testing, factory pressure testing, and assembly debugging. This enables customers to schedule on-site inspections and monitor the entire process, ensuring full transparency and traceability of production activities.
Comprehensive factory inspection
Before leaving the factory, equipment undergoes a 72-hour continuous full-load trial operation, with comprehensive testing of key parameters including oxygen/nitrogen purity, outlet flow rate, pressure, dew point, overall energy consumption, and operational stability. An official factory inspection report is issued, accompanied by all measured data, ensuring that no non-compliant equipment leaves the facility.
Professional installation guidance
Upon equipment delivery, we provide comprehensive installation assistance including positioning the main unit, connecting gas pipelines, wiring the electrical control system, and organizing electrical circuits. For special operating conditions such as chemical environments or explosion-proof requirements, we simultaneously perform dedicated explosion-proof and lightning protection installations to ensure compliant installation and adherence to industry safety standards.
Full-system debugging + on-site testing
A dual-testing approach combining no-load trial operation and load-based debugging is employed. After the equipment has maintained stable gas production for 24 consecutive hours with all parameters meeting specifications, the client conducts actual measurements of key nitrogen parameters to ensure full compliance with production requirements.
Tiered Practical Training Services
Conduct two-tier specialized training programs for frontline operators and equipment administrators, providing detailed instruction on key aspects including equipment startup/stop procedures, parameter settings, essential daily inspection steps, basic fault diagnosis, filter element replacement, and routine maintenance. A complete set of paper-based and electronic manuals, equipment schematic diagrams, spare parts lists, and standard operating procedures will be provided to ensure customer personnel fully master equipment operation and fundamental maintenance skills.
After-sales Service During the Warranty Period
 (Core Guarantee: Ensuring Stable Equipment Operation)
1
  The equipment comes with a warranty of no less than 12 months.
The entire equipment is covered by a warranty period of no less than 12 months; during the warranty period, any faults or component damage caused by inherent quality issues will be replaced free of charge.
2
  Remote technology with 1-2 hour rapid response
Remote technical support via phone or WeChat provides rapid response within 1–2 hours, with immediate resolution of minor issues through remote guidance and swift restoration of equipment functionality.
3
  Every 6 months during the warranty period
Domestic customers will receive a free comprehensive on-site inspection every six months during the warranty period, covering full services such as nitrogen purity calibration, equipment seal inspection, pipeline tightening, filter element cleaning, operational parameter optimization, and line detection, accompanied by an official inspection report to identify potential equipment issues in advance and prevent unexpected downtime.
4
  Common spare parts inventory
Manufacturers maintain stockpiles of frequently used spare parts such as programmable valves, filter elements, sensors, and solenoid valves; emergency spare parts are prioritized for direct shipment to prevent prolonged equipment downtime caused by shortages and ensure production continuity.
Lifetime Value-Added Services Upon Expiration of the Warranty Period
For all related issues—including equipment operation, process modifications, gas consumption upgrades, and equipment modifications—the manufacturer provides complimentary technical assistance and professional guidance throughout the entire lifecycle.
We offer an annual all-inclusive maintenance package, which includes regular inspections, equipment maintenance, and fault repair. After the equipment is out of warranty, all spare parts are supplied at cost price, eliminating arbitrary price increases and high-priced replacement parts.
For customers requiring capacity enhancement, nitrogen purity improvement, or production process adjustments, we offer old equipment retrofitting, parameter optimization, and capacity expansion services at costs significantly lower than purchasing new equipment, thereby reducing upgrade expenses.
Supports the installation of IoT-based remote monitoring systems, enabling real-time monitoring of equipment purity, flow rate, energy consumption, and operational status via smartphones or computers; provides automatic fault alarms and remote debugging capabilities, while facilitating early detection of carbon molecular sieve degradation and potential equipment risks.
Additional Industry-Specific Service Items
1
Custom Explosion-Proof Services

Designed for chemical, spraying, and flammable/exploding environments, we provide comprehensive customized explosion-proof solutions with full compliance certifications, assisting clients in successfully passing equipment explosion-proof acceptance inspections.

2
Ultra-High Purity Nitrogen Purification Services

For applications requiring 99.999% ultra-high purity nitrogen, we provide comprehensive solutions including carbon addition for oxygen removal and deep drying purification, meeting stringent standards for high-end industrial gas applications.

3
Export Support Services

We provide comprehensive customs documentation, multilingual manuals, overseas remote technical assistance, on-site debugging services, and solutions tailored to export project requirements.

4
Energy Consumption Optimization Service
Conduct regular follow-ups with customers to optimize equipment operating parameters based on actual gas usage conditions, continuously reduce electricity consumption per unit of gas produced, and deliver long-term cost savings for clients.
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Contact person
HUILIN Co. is a company specializing in the production, research and development, sales and service of PSA oxygen generators and nitrogen generators. The address of HUILIN Company is located in Guangzhou, China.
Contact Us
Contact person: Bridge Lei
Tel: +86 13724819737
Whatsapp:+8613724819737
E-mail: huilin@world-gas.cn
Add: B101 building No160 Gandong street Donghuan Panyu District, Guangzhou,  Guangdong, China
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