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Company Overview

With nearly 20 years of development, our annual production capacity of polyurethane insulated sandwich panels is 500,000 square meters, and the annual production capacity for different refrigerator doors and condensing units is up to 5,000 sets each.

1. PPGI and 304 Stainless Steel Sheet Form Workshop

The production area is more than 1,000 square meters, and it is here that the main production processes for forming parts of the PPGI and 304 stainless steel sheets are carried out, including bending, laminating, beading, cutting and other operations.

The bending machine is primarily used for irregularly shaped steel sheet cold storage buildings in order to accommodate different sizes in cold storage requirements.

The steel sheet covered by the automatic steel sheet molding equipment goes through a film, beading and 3 cutting processes after molding. Coating protects the surface of the steel sheet from scratches, and plays a role in the final appearance. Grooving is carried out to increase the adhesion of the polyurethane foam material and steel sheet, ensuring both are more secure. Finally, cutting is done to change the steel sheet into multiple sizes.

2. PU Foam Injection Workshop

The production area of the PU foam injection workshop is more than 5,000 square meters and 5 production lines used to process injection of polyurethane into sandwich panels in order to insulate them. The length for each manual injection line is more than 50 meters, with a 1.5 meter width and a 500 square meter daily production capacity.

In 2016, we spent nearly 2 million yuan (roughly $300,000) in order to construct a single semi-pressure injection production line. This equipment can produce up to 600 square meters per day of polyurethane insulated sandwich panels at a maximum size of (L x W) 12.5 x 1.2m. Each side of the foam production line is divided into 3 layers, with a processing time of approximately 30 minutes.

The plastic support pieces ensure the foaming materials flow freely between color steel plates, which ensures the uniformity of the foam and the conformance to strength standards in the colored steel plates. For each square meter, 5 or more support pieces are needed.

The cold storage panels are connected by hooks, in order to ensure the two panels are connected as closely as possible to prevent cold air from leaking into the gap between panels.

3. Cold Storage Door Production Workshop

The cold storage door manufacturing plant selection, production and inspection are all carried out under strict quality control standards. The doors are made out of a rugged, corrosion resistant alloy profile, and the door frames are made of aluminum profiles + PVC cold bridges to cut off the cold source. EPDM is enclosed inside the door panels, and each door features a precise and meticulous attention to detail in assembly, an excellent chemical stability and aging resistant properties.

  • Aluminum alloy door frames
  • Electric gate after packaging

4. Condensing Unit Assembly Workshop
The condensing unit assembly workshop covers more than 3,000 square meters, with an annual production capacity of 5,000 units for different types of condensing units. The control system for the screw condensing unit uses a programmable controller in order to achieve the entire screw compressor working process under automatic control and monitoring. Our German brand- Bitzer compressor cooling capacity and COP are extremely economical and popular among our customers.

5. Product Storage Area
We have more than 10,000 square meters of finished products stored at our facility to make shipping quick and easy. Each product is stacked in a batch to ensure each order is filled completely for an on-time delivery.

6. Transportation
Export shipments rely on container transport, and we take numerous protective measures to prevent accidental damage during shipping.

Changzhou Yuyan Refrigeration Technology Co., Ltd.
Changzhou Yuyan Refrigeration Equipment Co., Ltd.

Tel.: +86-519-8879-0110
Fax: +86-519-8879-0101
E-mail: sales@yuyan-refrigeration.com