INV-001 900W
900W Pure Sine Wave Off-Grid Inverter
Pure Sine Wave Off-Grid Inverter
A compact 900W pure sine wave off-grid inverter with digital display, a single AC output socket and intelligent temperature-controlled cooling.
Inverter Manufacturer since 2010
Factory-Direct Solar Inverters for Global B2B Partners
Zhongze Huasong is a Shenzhen inverter manufacturer producing 35 models from 900 W to 11 kW in its own 12,000 m² factory. The range covers off-grid and off-grid solar inverters for regions with weak grids, high electricity costs or unreliable power — sold factory-direct with OEM / ODM programs, ISO 9001 quality and a 24-hour response.
- OEM / ODM
- ISO 9001
- 24h response
- 60+ export countries
Zhongze Huasong at a glance
- What we make
- 35 inverter models from 900W to 11000W — 12 off-grid units and 23 off-grid solar units, all pure sine wave.
- Where
- Our own 12,000 m² factory in Shenzhen, China, running SMT, assembly and aging lines in-house.
- How much
- About 200,000 units a year, built by 300 staff including 40 R&D engineers.
- Who buys
- 120+ OEM / ODM clients and distributors across 60+ export markets.
- How to start
- Send your specification and quantity — our sales engineers reply within 24 hours, and a standard production run ships in 30–45 days after sample approval.
- Manufacturer
- Since 2010
- Factory area
- 12,000 m²
- Units / year
- 200k+
- Export countries
- 60+
- OEM / ODM clients
- 120+
Our Products
Inverter Categories
We manufacture two inverter ranges: off-grid inverters without a built-in solar controller, and off-grid solar inverters with one. Pick a range to see every model and its full specification table.
Solar Inverters
Grid-tied, hybrid and off-grid solar inverters for photovoltaic systems, covering string, three-phase, single-phase, central, micro and pumping topologies for residential, commercial and utility-scale projects.
1.5–11 kW
Off-Grid Solar Inverters
Inverters with a built-in solar charge controller, combining PV input, battery charging and pure sine wave AC output in one wall-mount unit. Built for energy independence where the grid is absent or unreliable.
Power Inverters
General-purpose DC-to-AC power inverters — pure sine wave and modified sine wave — for standalone, portable and backup power.
0.9–5 kW
Pure Sine Wave Inverters
Inverters with a clean sine wave output that suits sensitive electronics, motors and appliances. Low-frequency and high-frequency designs, with inverter charger versions that also charge a battery bank.
Featured
Popular Models
These are the models overseas buyers order most often. Every one can carry your own brand, with the output configuration, DC input range and socket types adjusted for your market.
INV-002 1800W
1800W P-Series Pure Sine Wave Off-Grid Inverter
Pure Sine Wave Off-Grid Inverter
A 1800W P-Series pure sine wave off-grid inverter with LCD smart display, four AC output sockets and intelligent temperature-controlled cooling.
INV-006 5000W
5000W 1159-Series Pure Sine Wave Off-Grid Inverter
Pure Sine Wave Off-Grid Inverter
A 5000W 1159-Series pure sine wave off-grid inverter with LCD smart display, two AC output sockets and intelligent temperature-controlled cooling.
INV-009 3000W
3000W P-Series Pure Sine Wave Off-Grid Inverter with USB
Pure Sine Wave Off-Grid Inverter
A 3000W P-Series pure sine wave off-grid inverter with USB, LCD smart display, two AC output sockets and intelligent temperature-controlled cooling.
Product Advantages
Product Advantages & Technical Strength
Six characteristics define the off-grid range: pure sine wave output, DC input options from 12 V to 72 V, temperature-controlled cooling, 220 V or 110 V AC output, power ratings from 900 W to 5000 W, and LCD or digital displays with USB variants.
01
Pure Sine Wave Output
Stable pure sine wave AC output designed for off-grid applications requiring reliable power for different types of loads.
02
Multiple DC Input Options
Selected models support multiple DC input voltage configurations, including 12V, 24V, 48V, 60V and 72V, depending on the product.
03
Intelligent Temperature-Controlled Cooling
Intelligent temperature-controlled fan cooling helps support reliable operation across different off-grid applications.
04
Flexible AC Output Configurations
Selected models are available with 220V / 110V AC output options and different socket configurations to meet different market requirements.
05
Multiple Power Options
The current off-grid inverter range covers 900W to 5000W, providing different power options for a variety of off-grid applications.
06
Practical Product Configurations
The product range includes different configurations such as LCD or digital displays, multiple AC output sockets and USB-equipped models, depending on the product.
Why Us
Why Global Buyers Choose Us
We are the factory, not a trading company: your engineering questions reach the people who design the product, and your cost reflects the manufacturing line rather than a reseller margin.
01
In-house R&D
40 engineers covering hardware, firmware and structure design. Custom firmware, logos, packaging and specs for OEM/ODM projects.
02
Manufacturing scale
12,000 m² facility with SMT, assembly and aging lines — 200,000 units annual capacity.
03
Quality you can audit
ISO 9001 quality system, 100% functional testing and 8-hour aging test before packing. CE-related LVD (EN 62109-1) and EMC compliance documentation is available for our solar inverters on request. Third-party inspection welcome.
How We Work
From RFQ to Delivery
An order moves through six steps: RFQ, quotation, sample confirmation, testing and certification, batch production, then delivery. You get a reply within 24 hours at step two, and a standard run ships 30–45 days after samples are approved.
- 01
RFQ
Send your requirements via the inquiry form, email or WhatsApp.
- 02
Solution & Quotation
Our sales engineers reply within 24 hours with a proposal and pricing.
- 03
Sample Confirmation
Evaluate samples, confirm specs and finalize the order details.
- 04
Testing & Certification
Required testing and destination-market compliance handled before production.
- 05
Batch Production
Scheduled production with quality control at every stage.
- 06
Delivery & Support
Export packing, shipping arrangement and after-sales support.
Inside Our Factory
Built for Consistent Quality and Reliable Supply
A 12,000 m² facility with SMT, assembly and aging lines in-house, staffed by 300 people and capable of about 200,000 units a year. Every production batch gets 100% functional testing and an 8-hour aging test before it is packed.
01
Production & Assembly
Structured production and assembly processes support consistent manufacturing and reliable product supply.
02
Quality Testing
Quality control and functional testing are integrated into the manufacturing process to support consistent product quality.
03
Aging Testing
Aging testing is part of the production quality process before products are prepared for delivery.
04
Finished Goods & Logistics
Finished products are prepared for packing and shipment to support efficient order fulfillment.
- 300+ staff, 40 R&D engineers
- Structured production and assembly processes
- 100% functional testing before packing
- 8-hour aging test on every production batch
- Third-party pre-shipment inspection welcome
Applications
Where Our Inverters Work
Six application types drive most of our orders: residential rooftop, commercial and industrial plants, battery storage, telecom base stations, rural electrification and backup power. Each one leans on a different part of the range.
Residential Solar
Home rooftop PV systems with battery backup and self-consumption optimization.
Commercial & Industrial
C&I rooftop and ground-mount plants with string inverters from 10 to 50 kW.
Energy Storage
Hybrid systems with LiFePO4 battery integration for peak shaving and backup.
Telecom Base Stations
Off-grid power for remote communication towers with unreliable or no grid access.
Rural Electrification
Standalone microgrid and off-grid power for villages, farms and island communities.
Backup Power
Uninterruptible supply for homes, clinics and small businesses during outages.
Need pricing or a custom solution?
Send us your requirements — our sales engineers reply within 24 hours.
Certifications & Standards
Compliance Documentation for Global Markets
Two document sets are available for the solar inverter range: CE-related LVD documentation assessed against IEC 62109-1:2010, and EMC documentation. Certificates are issued per model and per destination market, so the applicable set depends on your order.
CE / LVD
- Standard
- EN 62109-1
- Product
- Product
LVD compliance documentation is available for our solar inverters on request.
CE / EMC
- Product
- Product
EMC compliance documentation is available for our solar inverters on request.
Certification availability varies by model and target market. Tell us your destination country and we will confirm applicable certifications for your order.
Standards this documentation is assessed against
- IEC 62109-1:2010
- Safety of power converters for use in photovoltaic power systems — Part 1: General requirements. IEC
- IEC 62109-2:2011
- Safety of power converters for use in photovoltaic power systems — Part 2: Particular requirements for inverters. IEC
- ISO 9001
- Quality management systems — the standard behind our factory quality system, 100% functional testing and 8-hour aging test. ISO
Standard designations and scopes as published by the issuing bodies. Follow a link to read the standard at its source.
Questions Buyers Ask Before Ordering
Are you a manufacturer or a trading company?
We are a manufacturer. Shenzhen Zhongze Huasong Trading Co., Ltd. runs its own 12,000 m² facility with SMT, assembly and aging lines in-house, and ships about 200,000 units a year. You buy factory-direct, not through a middle layer.
How many inverter models do you make, and over what power range?
The current catalog holds 35 models spanning 900 W to 11 kW. It splits into 12 off-grid inverters (900 W–5000 W, no built-in solar charge controller) and 23 off-grid solar inverters (1500 W–11 kW, with a built-in MPPT controller).
Can you manufacture under my own brand?
Yes. Our OEM/ODM programme covers the enclosure, packaging, manual and display, and firmware can carry your brand where the model supports it. Output configuration, DC input range and socket types can be adjusted for your market.
What is the minimum order quantity?
MOQ depends on the model and how far the customization goes, because a private-label run needs its own artwork and firmware setup. Tell us the model and quantity you have in mind and we will confirm a realistic MOQ with pricing.
How long does an order take to ship?
Our sales engineers answer an inquiry within 24 hours. After sample approval, a standard production run typically ships in 30–45 days, depending on quantity and customization depth.
How is product quality verified before shipment?
The factory runs an ISO 9001 quality system with 100% functional testing and an 8-hour aging test before packing. Third-party pre-shipment inspection is welcome, and we will work with the inspector you appoint.
What certifications do your inverters carry?
CE-related LVD documentation to EN 62109-1 and EMC documentation are available for the solar inverter range on request. Certificates are issued per model and per destination market, so tell us your target country and we will confirm the applicable set.
Off-grid or off-grid solar — which do I need?
Choose an off-grid inverter when the solar charging is already handled by a separate charge controller. Choose an off-grid solar inverter when you want PV input, battery charging and AC output in one wall-mount unit. Both give pure sine wave output; the difference is whether the MPPT controller is built in.
What Our Partners Say
“The range of power options and clearly defined product specifications makes it easier for us to evaluate different inverter configurations for our market.”
“Having several off-grid inverter power options gives us more flexibility when selecting products for different customer applications.”
“The higher-power inverter options give us more flexibility when looking at different off-grid power requirements.”
“The multi-voltage configurations are useful when we need to evaluate different DC input requirements for off-grid applications.”
“The USB-equipped inverter configurations give us another option for applications where additional charging functionality is required.”
“The range from lower-power to higher-power off-grid inverters gives us more flexibility when selecting products for different applications.”
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Request a Quote Today
Send us your requirements — our sales engineers reply within 24 hours with pricing, lead times and OEM options.