Gupu Biotech is a company based in China that lists ultra-low temperature freezers on Global Trade Plaza. The products include the GUL-86U338HC and GDF-86U60E models. The GUL-86U338HC offers a 338 L capacity with a temperature control range of -40 °C to -86 °C and a pull-down time of 4 hours to reach -86 °C at 30 °C ambient. It uses dual SECOP compressors, a microprocessor controller with a 7-inch touchable LCD display, and PTC temperature sensors. Insulation consists of 130 mm PURF plus vacuum insulation panels. The outer cabinet is painted steel, the inner chamber is stainless steel, and the outer door features foam with a magnetic sealing strip, a safety door lock, and password protection. Power supply options are 220 V/50-60 Hz and 110 V/60 Hz. The GDF-86U60E is an -86 °C ULT freezer with external dimensions of 730 × 845 × 1400 mm and a net weight of 87 kg (gross 115 kg). Buyers can send an enquiry through Global Trade Plaza.