Refrigeration system : New-type refrigeration compressor
Controlling temperature of cold trough : Cold trough I: 0 °C, ± 0.5 °C;
Cold trough II: 0 °C, (-17) °C, ± 0.5 °C;
Cold trough III: (-17) °C, (-34) °C, ± 0.5 °C;
Cold trough IV: (-70) °C, ± 0.5 °C