Why is Stallone's fertilizer expensive?

There is a great demand for fertilizer from Stora, and the fertilizer from Stora is scarce and expensive, which makes the fertilizer from Stora expensive. Storan water-soluble fertilizer is produced by using the world-patented chelating technology, especially adding chelated zinc, copper, boron, molybdenum, cobalt and other trace elements, fully mixing various elements to promote each other, and meeting various nutritional needs of crops.