Diatomite is a kind of siliceous rock, which is mainly distributed in China, the United States, Denmark, France, Romania and other countries. It is a biogenic siliceous sedimentary rock, which is mainly composed of the remains of ancient diatoms. Its chemical composition is mainly SiO2, which can be expressed by SiO2 · nH2O, and its mineral composition is Opal and its variants.

China's Diatomite reserves are 320 million tons, with prospective reserves of more than 2 billion tons, mainly concentrated in East China and Northeast China, of which Jilin (54.8%, of which the proved reserves in Jilin Province account for the first in Asia) has a larger scale and more reserves Zhejiang, Yunnan, Shandong, Sichuan and other provinces are widely distributed, but the high-quality soil is only concentrated in the Changbai Mountain Area of Jilin Province. Most of the other deposits are grade 3-4 soil, which cannot be directly processed and utilized due to the high content of impurities.

Compound fertilizer industry: compound fertilizer for fruit and trees, vegetables, flowers and plants, and other crops;

Characteristics of diatomite application: diatomite is non-toxic, has good suspension performance, strong adsorption capacity, light capacity, and good mixing uniformity. Diatomite can become a high-efficiency fertilizer, promote the growth of crops, improve soil and other functions.