Import Co2 Cascade Refrigerating Unit — Buy in Bulk from Supplier in China

The CO2 cascade refrigerating unit is a two-stage refrigeration system using carbon dioxide as the low-temperature refrigerant and a secondary fluid, typically propane or ammonia, in the high-temperature stage. The system is designed to achieve evaporating temperatures as low as -50°C, making it suitable for frozen food storage and industrial chilling. The unit includes a compressor, condenser, evaporator, and control panel, all integrated into a single skid-mounted frame.

The system operates on the cascade principle, where the high-stage refrigerant cools the condenser of the low-stage CO2 loop. This avoids the high pressures associated with pure CO2 systems above 0°C. Typical operating pressures in the low stage reach 80 to 100 bar, while the high stage runs at 15 to 25 bar. The unit does not specify compressor type, but industrial cascade units commonly use hermetic or semi-hermetic reciprocating compressors with oil separators.

This unit is intended for use in supermarkets, cold storage warehouses, and food processing plants requiring consistent sub-zero temperatures. Buyers should confirm the refrigerant charge volume, cooling capacity in kW, and whether the unit includes a defrost cycle. The listing does not state electrical requirements, but such units typically require 380V 50Hz three-phase power. Packaging is custom steel frame with foam insulation. Lead time and MOQ are not disclosed and must be confirmed with the supplier.

Shandong Shenzhou Refrigeration Equipment Co., Ltd. is located in the Shengjing High-Tech Zone in Jinan, Shandong Province. The company is listed as a harbor-tier supplier, indicating basic verification of legal registration and contact details. There is no public information on years of operation, workforce size, production volume, or export history. The listing does not mention certifications, factory audits, or client references.

The company appears to specialize in refrigeration equipment, with this CO2 cascade unit as its primary product. It does not claim in-house manufacturing of compressors, valves, or piping systems, suggesting integration of third-party components. Response rate and average response time are not available, indicating no active sales channel on this platform. Buyers should treat this as a system integrator with no verified quality assurance documentation.