Product Summary
Sell Frozen Desserts Anywhere the Sun Shines - Even Where the Grid Never Reaches
Your customers want ice cream. The problem is rarely demand - it is the cold chain behind it. Mains power that drops ten times a day, diesel generators that cost more than the stock inside, ice that melts before it is sold. The SD/SC-378 solar flat glass door ice cream deep freezer was designed for exactly that reality.
Built by Hangzhou Juka Solar Technology Co., Ltd., this 378 L-class chest freezer holds ≤ −18 °C on solar power, displays stock through two flat sliding glass doors, and runs on 12 V/24 V DC or 110 V/220 V AC. It is the same cabinet our partners use to run ice cream and frozen food businesses across Africa, South Asia, the Middle East and island markets along the Belt and Road - off-grid, on-grid, and everywhere in between.
Whether you are stocking a beach kiosk, supplying village shops, or building a frozen-foods distribution business from scratch, this is the model we would hand you first.
Product Overview - Built Around the Ice Cream Business
The SD/SC-378 is a flat glass door solar deep freezer with a 1410 × 700 × 825 mm cabinet and a single, generous storage compartment. Its two flat sliding glass lids sit on a white aluminium frame, so your customers can see the product from standing height without you opening the freezer - fewer door openings means less cold air lost and a more stable internal temperature.
Under the lid, 85 mm of high-density polyurethane insulation works together with an R290 refrigeration system and a fan-cooled compressor to reach and hold ≤ −18 °C. That is genuine deep-freeze territory: hard-scoop ice cream stays scoopable, frozen meat and fish stay safe, and ice stays ice through the hottest part of the day.
The cabinet is designed to be used commercially, not gently. Four pure-white nylon castors make it mobile on rough surfaces. A key and lock keeps stock secure when the kiosk closes. A mechanical thermostat means anyone can operate it, and there is no control board to fail in a humid coastal climate.
And because it is configurable, it can be built for your market: your voltage, your plug type, your colour, your brand on the cabinet.
Key Features
1. 85 mm Insulation - The Reason It Survives the Afternoon
Insulation thickness is where cheap freezers give themselves away. In 40 °C ambient heat, a thin-walled cabinet runs almost continuously, drains the battery by midnight, and never quite reaches −18 °C. The SD/SC-378 uses an 85 mm foamed wall, thick enough to meet ST/T climate-class conditions and to keep the compressor off long enough to make solar power practical.
Juka's foaming is carried out in a constant 20–23 °C foaming room, which keeps foam density and cell structure consistent from the first cabinet of the morning to the last of the shift. Consistency is not a cosmetic detail - it is the difference between a freezer that holds temperature for years and one that slowly stops keeping up.
2. Flat Sliding Glass Doors - Display and Deep Freeze at the Same Time
Not many cabinets let you sell and freeze at −18 °C. The flat glass top gives you:
Product visibility - customers see the stock without you lifting a lid
Less cold loss - two small sliding panels instead of one large open top
4 mm glass, set in a white aluminium door frame made from a custom LG130 low-temperature grade material
That last point matters. In markets with large day/night temperature swings, ordinary door frames become brittle and crack at the corners. The LG130 compound was chosen specifically to resist cracking under large temperature differentials.
3. R290 Refrigerant and a Fan-Cooled Compressor
R290 is an efficient, low-GWP natural refrigerant, and it is combined here with a fan-cooled compressor. A dedicated fan directs air across the compressor controller, which lowers controller temperature and keeps the compressor stable through long, hot operating days. Inside, the compressor motor is guaranteed 100% copper windings - no copper-clad aluminium substitution.
4. External Condenser for Faster Heat Rejection
This model uses an externally mounted condenser, the configuration that rejects heat more effectively in high-ambient conditions and is easier to service and clean in dusty environments.
5. Four Power Configurations - One Cabinet, Four Kinds of Site
The SD/SC-378 accepts 12 V/24 V DC and 220 V/110 V AC, which means the same freezer can be deployed in four completely different power situations. Pick the configuration that matches your site - or change it later as your market develops.
| Scenario | Site conditions | Recommended configuration | How it works |
|---|---|---|---|
| 1. Daytime solar only | Strong sunshine, no grid, or grid power very expensive | Freezer + PV panel | The panel drives the freezer directly during daylight hours. Ideal for day-trade display cabinets. |
| 2. Solar by day, mains by night | Grid available but costly; you do not want to buy batteries | Freezer + PV panel + external AC/DC adaptor | The adaptor switches automatically to mains at night. No battery bank to maintain. |
| 3. Fully off-grid | No grid at all | Freezer + PV panel + built-in lithium battery | The panel runs the freezer and charges the battery by day; the battery takes over at night, switching automatically. |
| 4. Hybrid, three-source | Grid exists but fails repeatedly - ten or more outages a day | Freezer + PV panel + built-in lithium battery (hybrid design) | Solar runs the cabinet and charges the battery; mains has priority at night, and the battery steps in whenever the grid drops. |
6. Lockable, Mobile, and Built to Be Moved
A key and lock come as standard. Four pure white nylon castors with no regrind material carry the cabinet over uneven ground and stay intact far longer than mixed-material wheels. A single basket keeps small items organised.
7. Simple Mechanical Control
One mechanical thermostat. No touchscreen, no motherboard, no firmware. In humid, dusty, voltage-unstable environments, that simplicity is a feature: fewer things to fail, and any refrigeration technician can service it.
Appliance scenarios
Where the SD/SC-378 Works Best
Ice cream and frozen dessert kiosks. The core use case. Visible stock through the glass, −18 °C inside, mobile enough to reposition to where the foot traffic is.
Beach, park and street vendors. Solar power means no cable, no generator, no fuel run. Put the freezer where the customers are, not where the socket is.
Village shops and rural mini-marts. For communities beyond the last reliable transformer, this is often the first freezer in the area - and the start of a frozen-goods business.
Convenience stores and small supermarkets with unstable power. Scenario 4 was written for these sites: mains priority, automatic battery backup, no spoiled stock during outages.
Bars, restaurants and hotels. Ice cream service, plus frozen storage for kitchens that cannot trust the grid.
Mobile carts, tricycles and event stands. The cabinet pairs with our solar mobile cold-chain platforms for vendors who trade from a moving base.
Frozen food, meat and fish retail. The same −18 °C cabinet serves frozen protein retail, where temperature integrity is non-negotiable.
Distributors and project buyers. If you supply retailers or run cold-chain programmes, the SD/SC-378 can be shipped as a finished unit or as SKD/CKD kits for local assembly.
| Parameter | Specification |
|---|---|
| Model | SD/SC-378 |
| Cabinet type | Flat glass door chest freezer |
| Temperature control | Mechanical |
| Voltage | 12 V / 24 V / 220 V / 110 V |
| Temperature range | ≤ −18 °C |
| Insulation thickness | 85 mm |
| Refrigerant | R290 |
| Glass thickness | 4 mm |
| Door frame colour | White |
| Compressor | Fan cooling compressor |
| Condenser | External condenser |
| Basket | 1 |
| Castors | 4 |
| Key and lock | Yes |
| Paper sticker (branding) | Optional |
| Unit dimensions (W × D × H) | 1410 × 700 × 825 mm |
| Packing dimensions (W × D × H) | 1465 × 755 × 885 mm |
| N.W. / G.W. | 68 kg / 73 kg |
| Loading quantity | 72 units / 40' HQ |
Built for Hot Climates and Unstable Grids
Most freezers on the market are designed in, and for, temperate countries with stable electricity. Deployed in 40 °C heat on a grid that fails daily, they fail early - and the warranty conversation that follows is never pleasant.
The SD/SC-378 was specified the other way round: start from the assumption that the ambient is brutal, the power is unreliable, and the nearest technician is several hours away. Then choose the insulation, the condenser, the control system and the materials accordingly.
That is why this cabinet uses mechanical control instead of electronics, an external condenser instead of a hidden one, 85 mm of foam instead of the minimum, and metal in the compressor compartment instead of board.
Factory Introduction
Our service
Our factory has advanced equipment-automated welding/forming machines, auto foaming line, imported leak detectors/pressure meters-ensuring precise production, quality control, efficient output, and on-time deliveries.
- Manufactured using high-grade, wear-resistant materials, the compressor is engineered to withstand harsh conditions and continuous operation. It is the cornerstone of the Solar Ice Maker's reputation for longevity.
- With a proven track record in research and rigorous quality assurance, we empower your market expansion by delivering superior-quality, dependable solutions that excel in competitive landscapes. Our innovative products, fortified by deep technical expertise, ensure your brand stands apart and drives share growth.
- We provide unparalleled post-purchase support through a robust warranty package and dedicated service teams, fostering long-term customer trust with efficient troubleshooting and proactive assistance.
Factory advantages
01
- MOQ is as low as 1 piece for DC solar freezers, making business initiation straightforward for retailers and distributors worldwide.
02
Our facility has advanced equipment: automated welding & forming machines, auto foaming line, and imported leak detectors/pressure meters. These ensure precise production, quality control, efficient output, and on-time deliveries.
03
- Benefiting from a prime location near Yiwu port, Shanghai port, and Ningbo port, we enable smooth export processes and reduce logistical complexities.
04
Dedicated to rapid resolution of customer inquiries, we prioritize precision in support-delivering tailored insights and solutions to elevate satisfaction and solidify long-term partnerships.
Patent Certificate
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Patent Certificate
Patent Certificate
Patent Certificate
Inside Juka - How This Freezer Is Made
Hangzhou Juka Solar Technology Co., Ltd. was founded in 2015 with a single focus: combining solar energy, new energy and smart technology with refrigeration. Today we design and manufacture solar cold-chain products - solar freezers, solar refrigerators, solar ice makers, solar mobile ice-cream carts, ice-cream delivery tricycles and beverage retail carts.
Every product we make is exported. Our customers are mainly in Belt and Road countries and regions, and our work does not stop at the container: we help partners set up their own local production facilities for retail and delivery refrigeration products - creating jobs, improving living standards, and switching more of the cold chain onto clean energy.
Manufacturing and Testing Equipment
| Equipment | What it does for you |
|---|---|
| Automatic laser cutting machine | Consistent panel geometry, tight tolerances, clean edges |
| Punch press and bending machine | Accurate, repeatable cabinet forming |
| Automatic dual-gun high-pressure foaming machine | Even foam density across the whole cabinet - no thin spots |
| CACL high-precision dual-system filling machine | Precise refrigerant charge, unit after unit |
| INFICON high-sensitivity leak detector | Finds leaks that ordinary detectors miss |
Quality Control, Step by Step
Foaming takes place in a constant 20–23 °C foaming room, removing seasonal variation from foam quality.
Nitrogen purging on both the condenser and evaporator sections before any pipe connection, to protect internal circuit cleanliness.
Vacuum standard of below 20 Pa. A unit that does not reach spec is not charged with refrigerant - no exceptions.
Two leak tests per cabinet with an INFICON detector: once unpowered, once running.
Constant-temperature test room confirms refrigeration parameters, so units are tested under identical conditions year-round and performance claims stay honest.
Separated production and quality control. Only cabinets signed off by a QC inspector can be packed and warehoused. Production answers to production; quality answers to quality.
A dedicated process and quality assurance department maintains written process standards for every stage.
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Where the Difference Hides in the Materials
Most buyers compare price and compressor brand. The durability difference usually lives somewhere else:
| Component | Juka SD/SC-378 | Common market practice |
|---|---|---|
| Cabinet shell thickness | 0.4 mm | 0.35 mm |
| Inner liner thickness | 0.32 mm | 0.26 mm |
| Door frame material | Custom LG130 low-temperature grade, crack-resistant | Standard grade |
| Condenser tube diameter | Ø6.0 mm | Ø4.78 mm |
| Condenser wire density | 120 wires, heavy gauge - better heat dissipation | Fewer, thinner wires |
| Compressor compartment | Full metal - durable and flame-retardant | Calcium-plastic board or cardboard |
| Compressor compartment side panel | Metal - power cables survive repeated plugging | Plastic |
| Compressor controller housing | Large aluminium shell, directly fan-cooled | Smaller housing, limited cooling |
| Compressor motor windings | Guaranteed 100% copper | Not always specified |
| Castors | Pure white nylon, no regrind | Regrind or mixed material |
| Power plug | 16 A industrial plug - handles high current without heating | Standard domestic plug |
| Interior lamp | High-grade LED, rated for up to 10 years of use | Basic lamp |
| Door lock design | Concealed hook - nothing protruding to catch or break | Exposed hook |
These are not the whole list. Our engineering team counts more than thirty design advantages over comparable market cabinets. Almost none of them are visible in a product photo - which is exactly why they are worth asking about.
Customization, OEM and SKD/CKD Programmes
We manufacture the full process in-house, which means customisation and small batch orders move quickly.
Available on the SD/SC-378:
Cabinet colour and door frame finish
Handle style and panel design
Mechanical or electronic control
External or built-in condenser
Voltage and plug type for your market
Optional branding: paper sticker, LED light, light box
Basket configuration
SKD / CKD programmes. If you want to assemble locally rather than import finished units, we supply semi-knocked-down and completely-knocked-down kits. Our SKD/CKD range covers foamed-door freezers, curved and flat glass door cabinets, island cabinets, large freezers, display cabinets, cake cabinets, refrigerators and more - a practical route into manufacturing for partners who want to build a local industry, not just a trading business.
Packaging and Shipping
| Packing dimensions (W × D × H) | 1465 × 755 × 885 mm |
| N.W. / G.W. | 68 kg / 73 kg |
| 40' HQ container | 72 units |
Standard export packing with protective foam and edge protection. For mixed orders, shared containers or SKD shipments, tell us your target quantity and destination port and we will work out the loading plan with you.
Frequently Asked Questions
Can the SD/SC-378 run completely without mains electricity? Yes. With the built-in lithium battery configuration, the PV panel powers the freezer and charges the battery during the day, and the battery runs it at night, with automatic switching. There is also a mains-free daytime-only configuration for display cabinets used only during trading hours.
What temperature does it reach? It is rated to ≤ −18 °C, which is deep-freeze temperature suitable for ice cream, frozen desserts, meat, fish and other frozen goods.
Which voltages are available? 12 V, 24 V, 220 V and 110 V. You choose the configuration for your market, and DC and AC versions can be produced.
How many units fit in a container? 72 units per 40' HQ container.
Is it really suitable for ice cream in a hot climate? That is what it was designed for. The 85 mm insulation, R290 system, external condenser and fan-cooled compressor are specified to hold −18 °C under high ambient temperatures and ST/T climate conditions. Tell us your city and typical summer temperature and we will confirm the configuration.
Can I put my own brand on it? Yes. OEM branding is available - cabinet colour, panel and handle design, and optional paper sticker, LED lighting and light box.
Who services it, and are spare parts available? The mechanical control system and standard refrigeration components keep servicing straightforward, and any refrigeration technician can work on it. Spare parts are supplied with orders - discuss your volumes with us and we will plan the parts kit.
Do you supply SKD or CKD kits?
FAQ
Q1: What are the advantages of your products?
A:1.Adjusting temperature and energy-saving;
2.Prompting the reasons of the problem;
3.The position of electric fan can cool directly for compressor for better hot dissipation;
Q2: What is the function of the compressor?
A: Acting as the heart of the refrigerator, it compresses the refrigerant to increase its temperature and pressure,thereby driving the circulation of cooling throughout the system.
Q3: What is the MOQ for the BD/BC-158H model?
A: For DC freezers, MOQ is 1 piece. For AC freezers, MOQ is one 40HQ container, with the possibility to mix 2-3 models in initial shipments for inventory diversity.
Q4: What is the function of your solar charge controller?
A: Steady discharge electricity;protect battery from over-discharge;a series of detection and protection of load and battery.
Q5: What is the brand of your battery?
A: Our battery is custom-made according to the whole system of solar.
Q6: What is the brand and specification of your compressor?
A: We use the high-quality, cost-effective SIKELAN brand.
Specification: 35, 44, 65
<=200L for using 35; <=300Lfor using 44; >300L and upright ice maker for using 65; BD/BC-508 for using 91.
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