Refrigerator door [Preferred Shandong Huayu] 1, which is also called soil overburden cold cold cave, cave multi-arched structure, a single-hole style, but also form a continuous arch. Generally brick masonry, and some loess cover layer thickness as insulation. Casing used for low temperature cold storage, the foundation should cave in on easy gravel layer of frost or bedrock. Because of its local conditions, local materials, the construction is simple, low cost, durable, etc., to get a larger development in Northwest China. 2, built in stone cave cold generally more hard, cold storage doors within the overall good rock production, generally for lining the inside of cave or spray anchor handling, rock cave covered thickness of not less than 20m. Refrigerator door [preferred] Shandong Huayu causes odor in the so-called cold smell of cooking that is cold, raw materials and food under the influence of external factors, through physical and chemical changes, resulting in an abnormal smell, Over refrigerator door, This scent is adhering to the walls of the cold storage, ceiling, and equipment and tools. Odor in the refrigerator, in general there are several reasons: The cold did not enter the food before there is a smell exists. Before the cold food spoilage alone phenomena, such as the deterioration of eggs, meat, fish. Stored too cold fish without cleaning that store meat, eggs, or fruits and vegetables and other foods, causing infection and smell bad. Poor ventilation manually refrigerator door refrigerator, temperature, humidity, causing mold blooms produce mildew smell. Color leak refrigerator door cold storage refrigeration piping, refrigerant (ammonia) cause erosion to food odors. Freezer temperature does not drop, resulting in deterioration of perishable meat taste corruption. This mostly occurs in meat is not frozen, frozen storage library through that turn. There is a distinct smell of food in the cold storage warehouse, causing food odor cross-infection. Quality refrigerator door supply _ Fitch machinery (certified) _ Nanhui refrigerator door by Fitch Machinery Co., Ltd. Shandong. Shandong Huayu Machinery Co., Ltd. (www.huayujxsb.com) (www.huayujxsb.com) is a leader in Binzhou, industry-specific equipment, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, the maximum to meet customer needs. In Fitch mechanical leadership with the staff warmly welcome all inquiries negotiations to create Fitch machinery a better future.