Combined cold storage, food refrigeration warehouses, etc., temperature control ranges include 5ºC ~ -50ºC, -10ºC ~ -18ºC, and -18ºC ~ -23ºC (customizable). Capacity is determined based on actual products, daily power consumption is 10 kWh/day, and external dimensions are customized according to size requirements. The product features include novel materials, with stainless steel and color steel used as panels, and advanced composite materials used as insulation materials for the composite walls, making them lightweight, strong, with excellent thermal insulation, corrosion-resistant, and anti-aging properties; energy-saving and insulating, compared to other cold storages, it saves 30-40% energy; series matching, warehouse wall panels are professionally produced and highly interchangeable; easy to install and dismantle, wall panels use internal pre-buried piece snap connections; widely applicable, divided into L, D, J levels, meeting different needs, suitable for storing various items, and widely used in all industries and departments.