The Lanzhou Plateau takes advantage of the Northwest Plateau’s climate characteristics such as cool summer and autumn, sufficient sunshine, and large temperature difference between day and night. The high-quality vegetables produced in high-altitude areas are naturally rich in selenium and contain high organic matter content. In particular, the protein and vitamin C content is 31% higher than that of non-local vegetables. 28%. It is rich in nutrition, bright in color, rich in aroma, pure in taste, sweet and crispy, and is deeply loved by consumers at home and abroad.

Master Yue from Qijiaping, Jinya Town, Yuzhong County, grows 5 acres of celery. In July 2020, Master Yue came to the store of Boss Kong, an agent of Huaqiang compound fertilizer in Yuzhong County. He wanted to buy a few packages of fertilizer, but he was at a loss as to how to choose the right fertilizer.

Coinciding with the launch of Huaqiang's new product "YANGJIA", Boss Kong recommended "YANGJIA 24-6-16" compound fertilizer to Master Yue for planting celery. Master Yue bought two packs of "YANGJIA 24-6-16" with suspicion, and decided to use his own two acres of land for a trial, and apply one pack per acre.

Unexpectedly, the effect was very good. The two acres of celery land with "YANGJIA" compound fertilizer will eventually yield 16,000 catties per mu. According to the purchase price at that time, one yuan per catty, the gross income per acre would be 16,000 yuan. Compared with the land plots using other brands of compound fertilizer, the income increased by nearly 2,000 yuan.

This year, Master Yue’s 5 acres of celery fields were all applied with "YANGJIA" mineral fertilizer. Master Yue also took the initiative to find Mr. Kong, an agent in Yuzhong County, to use his own celery field as a celery demonstration field for "YANGJIA".