In Qinghai, the trade companies that are most popular among consumers include:

1. Yunnan Gold Mining Co., Ltd: This mining company is based in Yunnan province and is known for its significant gold reserves. The company has a strong presence in the international market and is highly sought after by investors.

2. Gansu Xinjiang Coal Corporation Co, Ltd: This coal corporation is headquartered in Gansu Province, China, and is one of the largest coal producers in China. The company operates several mines throughout the country and is well-known for its commitment to sustainability and responsible mining practices.

3. Qinghai Shuangfa Trade Co., Ltd: This trade company is based in Qinghai Province, China, and is known for its significant trading activities in a variety of industries, including agriculture, manufacturing, construction, transportation, and more. The company operates several major trading centers throughout the country and is highly respected both within the Chinese market and among foreign investors and business partners.
4. Gansu Xinjiang Coal Corporation Co Ltd: This coal corporation is headquartered in Gansu Province, China, and is one of the largest coal producers in China. The company operates several mines throughout the country and is well-known for its commitment to sustainability and responsible mining practices. In addition to producing significant amounts of coal, the company also operates a number of other facilities and businesses across various industries and locations within Gansu Province, China. These include:

1. Agricultural production: The company operates several large-scale agricultural processing facilities throughout Gansu Province, China. These facilities produce a wide range of agricultural products, including grains, fruits, vegetables, livestock feed, and more.
2. Manufacturing industry: The company operates several large-scale manufacturing facilities throughout Gansu Province, China. These facilities produce a wide range of manufactured goods, including machinery, equipment, vehicles, components, and more.
3. Construction industry: The company operates several large-scale construction facilities throughout Gansu Province, China. These facilities produce a wide range of construction materials, including concrete blocks, aggregates, asphalt, mortar, and more.
4. Transportation industry: The company operates several large-scale transportation facilities throughout Gansu Province, China. These facilities produce a wide range of transportation services, including passenger vehicles, commercial vehicles, and more.

In summary, the trade companies that are most popular among consumers in Qinghai include Yunnan Gold Mining Co., Ltd, Gansu Xinjiang Coal Corporation Co Ltd, and others. These companies operate a variety of facilities and businesses across various industries and locations within Gansu Province, China, including agricultural processing facilities, manufacturing facilities, construction materials, transportation services, and more.