# Freeze Dryer Factory

> Freeze Dryer Factory (freezedryerfactory.com) is the export brand of Shanghai Mars Industrial Co., Ltd., a Shanghai, China manufacturer of industrial vacuum freeze dryers (QS-FD-20, QS-FD-100, QS-FD-200), low-temperature vacuum fryers (5–300 kg per batch) and 3 t/h fruit & vegetable oil washing machines. 10 models. Contact: inquiry@freezedryerfactory.com, WhatsApp/Tel +86 176 2154 1688.

Every page is also available as Markdown by appending `index.md` to its URL (e.g. /products/index.md). A machine-readable catalogue is at /products.json and the quotation API is described in /openapi.json.

## Key pages
- [Home](https://freezedryerfactory.com/): Overview, capacity estimator and FAQ
- [All products](https://freezedryerfactory.com/products/): Filterable catalogue of 10 machines
- [About](https://freezedryerfactory.com/about/): Company facts and how projects run
- [Projects](https://freezedryerfactory.com/projects/): Engineered line blueprints
- [Blog](https://freezedryerfactory.com/blog/): Engineering guides
- [Contact & quotation](https://freezedryerfactory.com/contact/): Inquiry form, WhatsApp, phone and email

## Industrial Freeze Dryers
- [Industrial Freeze Dryers overview](https://freezedryerfactory.com/products/freeze-dryers/): SUS304 vacuum freeze dryers (lyophilizers) from 20 m² to 200 m² shelf area for fruit, vegetables, coffee, dairy, candy and ready meals.
- [QS-FD-20 Compact Industrial Freeze Dryer](https://freezedryerfactory.com/products/qs-fd-20-freeze-dryer/): QS-FD-20 industrial freeze dryer with ≈ 20 m² of shelf area and 200–300 kg wet load per batch, for fruit, vegetables, freeze-dried candy, pet treats, herbs and chili. SUS304 chamber in Standard, Advanced or Premium configuration.
- [QS-FD-100 Industrial Food Freeze Dryer](https://freezedryerfactory.com/products/qs-fd-100-freeze-dryer/): QS-FD-100 industrial freeze dryer with ≈ 100 m² of shelf area and 1,000–1,500 kg wet load per batch, for strawberries, mango, fruit crisps, instant coffee, freeze-dried candy and health food. SUS304 chamber in Standard, Advanced or Premium configuration.
- [QS-FD-200 Large-Scale Lyophilization Plant](https://freezedryerfactory.com/products/qs-fd-200-freeze-dryer/): QS-FD-200 industrial freeze dryer with ≈ 200 m² of shelf area and 2,000–3,000 kg wet load per batch, for instant coffee, milk powder, egg powder, fruit, vegetables and ready meals. SUS304 chamber in Standard, Advanced or Premium configuration.

## Low-Temperature Vacuum Fryers
- [Low-Temperature Vacuum Fryers overview](https://freezedryerfactory.com/products/vacuum-fryers/): Batch vacuum fryers from 5 kg pilot units to 300 kg production machines, with centrifugal de-oiling under vacuum for low-oil fruit and vegetable chips.
- [5 kg Pilot Vacuum Fryer for R&D and Samples](https://freezedryerfactory.com/products/5-kg-pilot-vacuum-fryer/): 5 kg-per-batch low-temperature vacuum fryer for recipe development, papaya chips and fruit and vegetable samples. Fries at 80–120 °C under vacuum with centrifugal de-oiling for bright, low-oil chips.
- [10 kg Compact Vacuum Fryer](https://freezedryerfactory.com/products/10-kg-compact-vacuum-fryer/): 10 kg-per-batch low-temperature vacuum fryer for specialty snacks, meat snacks and mushroom chips. Fries at 80–120 °C under vacuum with centrifugal de-oiling for bright, low-oil chips.
- [100 kg Low-Temperature Batch Vacuum Fryer](https://freezedryerfactory.com/products/100-kg-batch-vacuum-fryer/): 100 kg-per-batch low-temperature vacuum fryer for vegetable chips, fruit chips, shiitake mushroom and purple sweet potato. Fries at 80–120 °C under vacuum with centrifugal de-oiling for bright, low-oil chips.
- [150 kg Vacuum Frying Line for Fruit & Vegetable Chips](https://freezedryerfactory.com/products/150-kg-vacuum-frying-line/): 150 kg-per-batch low-temperature vacuum fryer for fruit chips, vegetable chips and okra. Fries at 80–120 °C under vacuum with centrifugal de-oiling for bright, low-oil chips.
- [300 kg Vacuum Frying Line for Fruit Crisps](https://freezedryerfactory.com/products/300-kg-vacuum-frying-line/): 300 kg-per-batch low-temperature vacuum fryer for jackfruit chips, banana chips and apple crisps. Fries at 80–120 °C under vacuum with centrifugal de-oiling for bright, low-oil chips.
- [Industrial Vacuum Frying System with De-oiling, 100–300 kg](https://freezedryerfactory.com/products/industrial-vacuum-frying-system/): 100–300 kg-per-batch low-temperature vacuum fryer for potato chips, French fries, banana chips and fish skin. Fries at 80–120 °C under vacuum with centrifugal de-oiling for bright, low-oil chips.

## Fruit & Vegetable Oil Washing Machines
- [Fruit & Vegetable Oil Washing Machines overview](https://freezedryerfactory.com/products/washing-machines/): Automatic 3 t/h stainless-steel oil washing machines for fruit, vegetables, olives, chicken and frozen food, in 380 V, 220 V and 110 V versions.
- [Automatic Oil Washing Machine for Fruit, Vegetables & Olives, 3 t/h](https://freezedryerfactory.com/products/automatic-oil-washing-machine-3-t-h/): Automatic 3 t/h stainless-steel oil washing machine for olives, vegetables, fruit, chicken and frozen food. Air-bubble washing with spray rinse; 380 V / 220 V / 110 V versions.

## Projects
- [Freeze-Dried Strawberry Slice Line, 2 t/day](https://freezedryerfactory.com/projects/freeze-dried-strawberry-line/): Two QS-FD-100 chambers on staggered cycles turn about 2 tonnes of prepared strawberries per day into crisp, colour-true slices for cereal, snack and baking brands.
- [Instant Coffee Lyophilization Plant](https://freezedryerfactory.com/projects/instant-coffee-lyophilization-plant/): A QS-FD-200 Premium chamber dries frozen coffee-extract granules at low temperature to keep the aroma that makes freeze-dried coffee worth its price.
- [Freeze-Dried Candy Production Room](https://freezedryerfactory.com/projects/freeze-dried-candy-production-room/): A single QS-FD-20 running short cycles lets a confectionery brand puff and crisp hard candies, marshmallows and taffy several times a day in a small room.
- [Vacuum-Fried Jackfruit & Banana Chips Line](https://freezedryerfactory.com/projects/vacuum-fried-fruit-chips-line/): A 300 kg-per-batch vacuum fryer with centrifugal de-oiling makes bright, low-oil jackfruit and banana chips at 80–110 °C.
- [Shiitake Mushroom & Vegetable Crisps](https://freezedryerfactory.com/projects/mushroom-and-vegetable-crisps/): Recipes are proven on a 10 kg pilot vacuum fryer and scaled to a 100 kg production unit, so shiitake, okra and purple sweet potato crisps reach market faster.
- [Olive & Vegetable Washing Line, 3 t/h](https://freezedryerfactory.com/projects/olive-and-vegetable-washing-line/): A 3 t/h tank-type washing machine with spray rinsing and an inspection belt gives a clean, consistent feed to downstream freeze dryers or fryers.

## Guides
- [How Industrial Freeze Drying Works: The Lyophilization Cycle Explained](https://freezedryerfactory.com/blog/how-industrial-freeze-drying-works/): Industrial freeze drying (lyophilization) removes water from frozen food by sublimation: product is frozen to about −35 °C to −40 °C, the chamber is pulled to a deep vacuum (typically 10–60 Pa), and gentle shelf heat turns ice directly into vapour, which is captured on a condenser (cold trap) at −45 °C or colder. A complete food cycle usually takes 16–24 hours and leaves 2–5 % residual moisture.
- [How to Size an Industrial Freeze Dryer for Your Daily Output](https://freezedryerfactory.com/blog/how-to-size-an-industrial-freeze-dryer/): To size an industrial freeze dryer, divide your daily wet input (kg) by the loading density (kg per m² of shelf) and by the number of batches you can run per day. Example: 2,000 kg/day of sliced fruit at 10 kg/m² with one 20-hour batch per day needs about 200 m² of shelf area — one QS-FD-200 or two QS-FD-100 units.
- [Vacuum Frying vs Deep Frying: Oil, Colour, Nutrients and Cost](https://freezedryerfactory.com/blog/vacuum-frying-vs-deep-frying/): Vacuum frying cooks food at about 80–120 °C under reduced pressure instead of 160–190 °C at atmospheric pressure. The lower temperature keeps natural colour and flavour, reduces oil degradation and acrylamide formation, and—combined with centrifugal de-oiling under vacuum—typically yields chips with noticeably lower oil content. It costs more per kilogram of capacity than a deep fryer but makes premium fruit and vegetable chips possible.
- [Starting a Freeze-Dried Fruit Business: Equipment, Layout and Utilities](https://freezedryerfactory.com/blog/starting-a-freeze-dried-fruit-business/): A freeze-dried fruit plant needs five equipment groups: washing and pre-treatment, cutting, freezing, freeze drying, and low-humidity packing. A practical start is one QS-FD-20 class freeze dryer for market testing (about 200–300 kg wet per batch), moving to QS-FD-100 or QS-FD-200 chambers once demand is proven.
- [Industrial Freeze Dryer Maintenance Checklist: Daily to Annual](https://freezedryerfactory.com/blog/industrial-freeze-dryer-maintenance-checklist/): Industrial freeze dryer maintenance focuses on four systems: vacuum (pump oil, seals, leak rate), refrigeration (pressures, condenser cleaning, refrigerant), the chamber (door gaskets, shelves, cleaning) and controls (sensor calibration, alarm checks). Daily visual checks, weekly pump oil inspection, monthly leak-rate tests and an annual calibration keep cycles consistent.
- [Washing Fruit and Vegetables Before Freeze Drying or Vacuum Frying](https://freezedryerfactory.com/blog/fruit-and-vegetable-washing-before-drying-and-frying/): Washing removes soil, residues, surface oil and micro-organisms before drying or frying, which protects both food safety and equipment. A tank-type bubble washer with spray rinsing handles most fruit, vegetables and olives; a 3 t/h machine suits small and medium freeze-drying or vacuum-frying lines.

## Optional
- [Full content for LLMs](https://freezedryerfactory.com/llms-full.txt): All pages as one Markdown file
- [Product data (JSON)](https://freezedryerfactory.com/products.json): Structured specifications
- [Privacy](https://freezedryerfactory.com/privacy/): Data handling