Delaiwen Electric | Back-Supplied Cold Storage, Efficient Cold Chain Solution for Food Factories & Catering Stores

With the rapid expansion of prefabricated food, bakery and chain catering industries, cold chain requirements go far beyond simple low-temperature storage. As food safety regulations tighten worldwide, food loss control, store-back circulation optimization, production continuity and hygiene compliance have become core factors affecting profits of overseas food enterprises. Conventional walk-in cold rooms show obvious drawbacks under frequent picking scenarios. Workers open doors repeatedly and enter the chamber, letting plenty of hot and humid air rush in, causing severe temperature fluctuation and massive cold loss. It raises long-term electricity bills and easily spoils food. Cross-contamination risks from personnel access, health hazards of low-temperature work and low space utilization of old sites trouble numerous food factories, bakery workshops and catering stores. Back-supplied cold storage adopts a double-layer independent structure with front picking and rear restocking, reconstructing the cold chain operation mode of food workshops from the ground up. It has become the preferred solution for global food enterprises to upgrade cold chain systems. Welcome to call us for project evaluation: +86 13392216477.

Many clients confuse back-supplied cold storage with ordinary cold rooms, mistakenly thinking it is just a conventional room with an extra picking window. That is the most common misunderstanding in procurement. A genuine back-supplied cold storage is a double-layer independent chamber system where the storage zone and front picking area are physically separated with independent workflows. Front picking windows are installed on the normal-temperature working surface, so pickers finish goods selection without entering the low-temperature area. The independent rear passage is used by warehouse staff for material loading and replenishment. This structure perfectly fits high-frequency loading scenarios such as prefabricated food factories, bakery workshops, fresh food plants and catering store back kitchens, solving temperature cross-leakage, cold loss and cross-contamination from the spatial design level.

Fundamentally speaking, back-supplied cold storage is equipment specially developed for frequent-picking food production scenarios, with a design purpose completely different from general storage cold rooms. Food workshops usually run two or three shifts continuously, and picking windows open repeatedly every day, putting high demands on chamber sealing, continuous unit operation, temperature stability and hygiene standards. General cold rooms focus on static storage with low door-opening frequency. The core design goal of back-supplied cold storage is to solve three major pain points in frequent picking scenarios: energy consumption, food safety and personnel safety. Through communication with global client projects, Delaiwen Electric summarizes eight core pain points of traditional cold rooms, most of which can be solved by back-supplied cold storage.

Pain point 1: Difficulty in independent multi-temperature control. Inside food workshops, raw material freezing at -18℃, fresh food refrigeration at 0~5℃, cooked food preservation at 0~4℃ and low-temperature dough proofing require independent temperature-controlled spaces. Ordinary cold rooms can hardly separate zones completely and temperature cross-leakage easily occurs. Once temperature is out of control, bulk food is spoiled. Delaiwen back-supplied cold storage supports independent multi-temperature zones. Refrigeration, freezing and proofing zones are separated, each equipped with independent unit and controller without interference, eliminating cross-temperature risk.

Pain point 2: Strict hygiene standards and difficult cleaning. Food workshops need daily washing and chemical disinfection. Splicing gaps of ordinary panels easily accumulate water and dirt, breeding bacteria and mould, failing to meet international standards such as HACCP. Delaiwen back-supplied cold storage adopts optional food-grade 304 stainless steel panels with high-strength food sealing at joints. The smooth surface supports high-pressure washing and chemical disinfection, passing food hygiene inspections of various countries easily.

Pain point 3: Unreasonable workshop circulation and cross-contamination. Traditional cold rooms share one door for raw materials and finished goods, causing crossed routes and cross-contamination, which is a key inspection item of food authorities worldwide. Back-supplied cold storage realizes physical isolation: raw materials enter through the rear, finished goods are picked at front windows. Two workflows are completely separated to avoid raw-cooked contamination. Modular layout can also plan pallet turnover and forklift passages according to factory dimensions, especially suitable for old factory renovation to maximize storage volume in limited space.

For food processing scenarios, Delaiwen does not apply generic cold storage solutions. Customized design is carried out according to production capacity, food categories, factory conditions and local regulations. Panel thickness is matched by zone: thicker PU panels for freezing areas to reduce cold loss, suitable thickness for refrigeration areas to balance cost. Food-grade 304 stainless steel is optional for inner panels, resistant to oil and corrosion, supporting high-pressure washing. Each temperature zone is equipped with an independent refrigeration unit and controller. Insulated picking doors, sliding windows, buffer structure and air curtains can be configured at the front to further stabilize temperature and lower unit load. Units support multi-country voltage and frequency with overload and high-low pressure protection for long-time nonstop operation.

For accessories, a full range of food-grade components fits back-supplied workshop scenarios: food-grade sealed picking doors, metal anti-collision guards, pressure balance valves, special drainage systems and moisture-proof explosion-proof lighting. The Delaiwen intelligent temperature control system monitors internal temperature in real time, triggers automatic alarms, stores data in cloud and exports PDF reports for local food authority inspection. Overseas clients provide CAD drawings and site photos, and our engineers complete front-rear route planning and layout, output 2D drawings and simple 3D renderings, supporting remote communication and OEM private labeling.

Delaiwen Electric establishes a standardized full-process delivery system for overseas export projects: demand communication covering capacity, categories, temperature zones, factory dimensions, power parameters and certification requirements; site survey and layout design; 2D drawing confirmation; factory production of all components; full performance test before delivery with special inspection on double-layer sealing; split packaging and optimized container loading to help clients save ocean freight; delivery of installation manuals, drawings and certification documents; remote video guidance during on-site installation; unit commissioning and continuous temperature monitoring for acceptance; afterwards warranty, spare parts supply and remote troubleshooting support.

Many clients only focus on upfront price while ignoring whole-life-cycle operating cost. The one-time investment of back-supplied cold storage covers double-layer panels, refrigeration main units, electric control system, insulated picking doors, anti-collision guards, drainage system, air curtains and other accessories. Among annual operating costs, electricity accounts for the largest share. The reach-in structure significantly reduces cold loss, so the power bill is lower than traditional cold rooms. Regular maintenance and gasket replacement reduce unexpected shutdowns. Intelligent temperature control records data automatically, saving manual ledger work. Comprehensive calculation shows a well-designed back-supplied cold storage usually recovers its investment within several years through lower food loss and electricity cost. Delaiwen engineers can provide customized ROI calculation according to project parameters.

Case reference: A Southeast Asian chain fast food back-store project customized a back-supplied cold storage with dual zones including a -18℃ raw material freezer and a 0~5℃ semi-finished chiller, multiple sliding picking windows at the front, rear restocking, 304 stainless steel panels and reinforced double-layer sealing. After commissioning, temperature fluctuation was controlled within ±1℃ and food loss rate dropped 60%, passing local food authority inspection smoothly. A European bakery enterprise with failed old insulation was renovated into a back-supplied cold storage in an irregular factory, using low-noise air-cooled units and intelligent temperature logging. After renovation, it met local HACCP requirements with shorter construction time and minimized production downtime.

Purchasing reminders: First, do not use a conventional walk-in cold room with simple windows pretending to be back-supplied cold storage. A genuine one must adopt a double-layer independent chamber structure; otherwise poor sealing, cross-temperature and heavy cold loss will fail food inspection. Second, do not neglect front-rear route separation. Crossed passages destroy the core value of back-supplied cold storage. Third, confirm target-market voltage, certification and noise regulations before ordering to avoid unusable goods at port. Fourth, confirm double-layer sealing standards and warranty scope in contract annexes.

The competition in chain catering and prefabricated food industries is essentially supply chain competition. As the core hub of the food supply chain, the reliability and compliance of the cold chain system directly determine food safety, product quality and operating cost. Traditional walk-in cold rooms can hardly match the special conditions of frequent picking, food hygiene and continuous production. Delaiwen Electric focuses on export business of back-supplied cold storage, providing one-stop customized services from survey, drawing design, production, ocean shipment to remote commissioning guidance. Relying on modular double-layer structure, food-grade materials, multi-voltage units and traceable intelligent temperature control, we help global food enterprises build safe, stable, energy-saving and compliant back-supplied cold chain infrastructure.

Whether you are building a new food workshop or renovating an old cold room into back-supplied cold storage, Delaiwen Electric can provide exclusive solutions according to your site conditions, production targets and local regulations. Welcome to call: +86 13392216477, for a free custom back-supplied cold storage proposal and quotation, supporting your brand cold chain upgrade and steady business expansion in global markets.