Diatomaceous earth（diatomite、kieselguhr 、kieselgur 、tripoli 、infusorlal earth） is a kind of sediment rock of silicon character with biology cause of formation, mainly consisting of remains of ancient diatom, taking SiO2 as main chemical compositions, opal and its variation as mineral compositions. SiO2 in Diatomaceous earth（diatomite、kieselguhr 、kieselgur 、 tripoli 、infusorlal earth） is different from that in other minerals and rocks on structure and compositions, and it is an amorphous opal mineral with organic cause of formation, generally called diatomaceous silicon dioxide. Beside H2O and SiO2, there is a small quantity of Fe, Al, Ca, Mg, K, Na and other impurities in diatomite. As per crude ore quality, the Diatomaceous earth（diatomite 、kieselguhr 、 kieselgur 、tripoli 、infusorlal earth） could be divided into diatomite, clay-inclusive diatomite and clay diatomaceous earth.Diatomaceous earth（diatomite、kieselguhr 、 kieselgur 、 tripoli 、infusorlal earth）refers to the content of diatom shell accounting for above 80% in crude ore, while clay-inclusive diatomite contains more than 70% of diatom shell in crude ore, and clay diatomite contains about 60% of diatom shell in crude ore, showing that the last one is of bad quality.

As diatomite is of unique micropore structure and particle distributing, which could form filter layer of high-infiltration after processed into filter aid, accordingly able to hold up various particles of impurities, getting rid of the tiniest suspending solid, even including particulate impurities of 0.01 micron, thus making filter liquid cleaner and cleaner. So it gains good reputation of natural molecule screen being an ideal material adopted at large in filtration industries at present. Nowadays, diatomite filter-aid has been widely used for solid-liquid separation and liquid purification in many industrial departments.

For applied structures of diatomite, fillings act as the second largest use of diatomite inferior to filter-aid. It is of light-weight, soft-quality, multi-hole, sound insulation, heat-resistant, acid-resistant, large specific surface area as well as stable chemical property and other series of good characters, so diatomite is a kind of functional fillings wildly used in many industrial fields.

Raw materials of our company for producing diatomite filter-aid are completely from self-owned mine and high quality ores with SiO2 more than 85% are used for production. Our company persists in inspecting all raw materials, intermediate products and additives and strictly implements ISO9001: 2000 quality management system standards and ISO14001: 2004 environmental management system standards during actual production. Tracking for finished products is completely realized through differentiated batch control system. We can provide clients of various fields with stable and reliable products and professional and rapid services.