Our History

 

Guangdong Joinwin Global Digital Intelligence Technology Co., Ltd. was founded in Shenzhen in 2026. Backed by its founding team's 21 years of foreign trade experience, it focuses on global expansion of energy storage products, builds multi-region overseas sales channels, and provides full-chain overseas solutions with a vertical AI trust system.
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Our Factory

 

Our company operates under standardized modern production management systems and holds ISO 9001 Quality Management System Certification as well as BSCI Social Responsibility Audit Certification. These accreditations guarantee that all our products and daily business activities fully conform to international industry norms.

 

We are staffed with a veteran R&D team and a streamlined management group that consistently propel technical innovation and product iteration. A full range of domestic and international authoritative certificates have been secured, such as FCC, CE, UN38.3, CCC and MSDS, enabling our products to access markets worldwide.

 

Our energy storage products cover diverse application scenarios, including outdoor camping, household power backup, emergency disaster relief and construction engineering power supply. We remain committed to delivering safe, user-friendly and trustworthy energy storage solutions to partners and end users across the globe.

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Why Choose Us
 

Fast Delivery

We have 13+ oversea warehouses covers 37 countries,can delivery from your local country directly.

After-sales Services

Flashfish offer 1-5 years guarantee, and have competitive customer service systems and we can provide comprehensive support on customer services by email, chat software, etc within 24 hours.

Advertising Support

Flashfish will continually promoting our products on internet,magazine,exhibition and etc. And we will conduct resource integration, provide products and full material support to our partners during advertising and promotional activities.

Project Protection

Flashfish offer 1-5 years guarantee, and have competitive customer service systems and we can provide comprehensive support on customer services by email, chat software, etc within 24 hours.

Technical Support

We will provide product, technical or free training.

Marketing Guidance

We will provide assistance to our partners for local market development.

 

 
Our Product
 

✔ Portable Power Stations
✔ Solar Generator
✔ Solar Panel

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Product Application

Portable Power Station

- Outdoor Scenarios: Camping, RV road trips, fieldwork, outdoor stalls, live streaming, outdoor picnics; powering kettles, small cooking appliances, refrigerators, lighting, and digital devices.

- Home Emergency: Backup power during power outages, ensuring continuous operation of refrigerators, lighting, and small appliances.

- Disaster Emergency: Emergency power supply at disaster sites during power outages.

Household Energy Storage Power Supply

- Off-grid/grid-connected backup power supply for homes, combined with photovoltaic panels for self-consumption.

- Continuous power supply for homes in areas with unstable power grids, coping with frequent power outages.

- Energy storage backup power for villas and self-built residences, reducing dependence on grid power.

Solar Photovoltaic Accessories (Foldable Solar Panels)

- Combined with portable energy storage and household storage devices, providing solar power supplementation in outdoor environments without grid power.

- Photovoltaic power supply for outdoor, RV, and remote areas.

ODM/OEM Manufacturing

- We offer mold making, function customization, software parameter tuning, and OEM manufacturing services for overseas brands and importers.

- We support customization of power, interfaces, appearance, and logo, covering portable energy storage and home energy storage system manufacturing.

 

Our Certificate

 

Possesses 30+ utility model patents related to energy storage; products have obtained a full set of cross-border export certifications including CE, FCC, RoHS, UN38.3, and MSDS, meeting the requirements for overseas customs clearance.

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Production Equipment

 

Production Model: Semi-automatic assembly lines. Battery cells are sourced externally. The factory carries out PACK assembly, complete-unit assembly and aging testing.


1.Lithium-ion Battery PACK Assembly Line: cell sorters, spot-welding machines, lithium-battery assembly tooling
2.Complete-unit Assembly Line: multi-station production lines for assembling inverters, main circuit boards and housings
3.Comprehensive Aging-test Equipment: full-load aging test racks for load-bearing and charge-discharge cycle testing
4.Functional Testing Instruments: comprehensive power-supply testers, withstand-voltage & insulation testers for performance verification of AC/DC ports and display screens
5.Mould Workshop: in-house mould-opening equipment to develop new-product housing moulds for ODM customisation
6.Finished-product Packaging Line

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Production Market

 

Our products are mainly sold in the African, Southeast Asian, European, American, and Middle Eastern markets.

 

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Our service

Pre-sales Service

 

1. Needs Assessment and Selection: Our international sales and technical staff will work together to recommend suitable portable energy storage, residential energy storage, and PV accessories based on the client's target market, load capacity, usage scenario (home emergency, camping, off-grid power), and budget. We also match corresponding certification versions (CE/FCC/UN38.3, etc.) for different regions such as Africa, Southeast Asia, and Europe and America.

2. Sample Support: We support clients in requesting sample testing. Samples can be made with a logo. Bulk orders will be placed only after product performance and appearance are confirmed.

3. ODM/OEM Solution Output: We can provide services such as shell color modification, logo silkscreen printing, interface adjustment, and BMS parameter debugging, outputting customized solutions, quotations, and timeline assessments.

4. Document Delivery: We provide product specifications, certification certificates, and image/video materials free of charge for clients' local market promotion.

5. Inquiry Response: Our international sales team provides rapid responses via WhatsApp and email, and promptly replies to client technical inquiries on weekdays.

In-Sales Service

 

1. Order Confirmation: Confirm specifications, power, interface, logo customization, quantity, delivery date, and packaging requirements; issue a Proforma Invoice (PI).

2. Production Tracking: Synchronize production progress; provide real-time photos and videos of key production stages.

3. Full Factory Inspection: Perform charge/discharge, load aging, and functional tests on each product; conduct random inspections before shipment to ensure normal operation.

4. Packaging and Documentation: Neutral packaging or customer-customized color boxes; provide commercial invoices, packing lists, customs declaration documents, and a full set of customs clearance certificates (CE, UN38.3, MSDS, etc.) for convenient overseas customs clearance.

5. Shipping Coordination: Cooperate with the customer's designated freight forwarder to complete container loading and synchronize bill of lading and logistics tracking information.

After-Sales Service

 

1. Remote Technical Support: Provide 7x12-hour technical support via WhatsApp/email, including troubleshooting, usage guidance, and fault diagnosis; provide English version manuals and operation videos.

2. Warranty Policy: The portable energy storage unit is covered by a 2-year warranty, and the core components (lithium iron phosphate battery cells) are covered by a 3-year warranty. The warranty period begins from the factory shipment date. **Damage caused by human error, unauthorized disassembly, water damage, and overload are not covered under warranty.

3. Troubleshooting Solutions:

- Minor faults: Remote guidance for customer troubleshooting;

- Hardware faults: For bulk orders, faulty parts will be provided first for local replacement by the customer; for small orders, return to the factory for repair can be negotiated (round-trip logistics costs will be negotiated).

4. OEM Customer Empowerment: Providing after-sales training documents to brand customers, teaching overseas distributors basic fault diagnosis and simple repairs, and supporting customers in local after-sales service.

 

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