Our company is located in the northwest of Zhangjiakou City, Hebei Province, China, with a vegetable planting area of 100000 hectares and an annual output of 6 million tons. We have over 100 vegetable constant temperature warehouses and can also process dehydrated fresh vegetables. Our region belongs to the continental monsoon climate of East Asia, with an altitude of about 1500 meters. The climate is cold and cool, the air is dry, and the freezing time in winter is long. The incidence of vegetable diseases and pests is low, and the amount of pesticide used in the field is small; Adequate sunlight, large temperature difference between day and night, abundant accumulation of dry matter in crops, and strong stress resistance; Developed animal husbandry and abundant organic fertilizer sources; Vegetable producing areas are far away from industrial pollution, with good water and air quality, making them a "natural farm" for producing pollution-free, green, and organic vegetables. The unique climate and environment have created excellent vegetable quality in our region.