Perlite is a vitreous rock formed from volcanic acidic lava that has been rapidly cooled, named for its pearl-like fracture structure. Perlite deposits include perlite, obsidian, and pitchstone. The differences between them are as follows: perlite has circular arc-shaped cracks formed by condensation, known as the perlite structure, with a water content of 2-6%; pitchstone has a resinous luster, with a water content of 6-10%; and obsidian has a glassy luster and a conchoidal fracture, with a water content generally less than 2%.

The Xueyin Perlite Factory in Longjiang County is located at the junction of Qiqihar City and Longjiang County, specializing in the production of expanded perlite and perlite insulation boards. In 2015, the company invested millions to upgrade equipment and expand the factory, adding new projects such as perlite insulation mortar and soilless cultivation perlite for agriculture. Our products are mainly distributed in the following regions: across Heilongjiang Province, including Harbin, Daqing, and the surrounding areas of Qiqihar; as far north as Manzhouli and Mohe; as far south as Bai城, Jilin; and as far west as Wulanhetao and Tuentian. Since purchasing multiple large transport vehicles in 2013, we have successfully sold our products to various regions in Heilongjiang, Jilin, and Liaoning! Custom insulation boards have also opened up the southern market! For many years, we have continuously innovated with high-tech methods to improve product quality. Perlite and perlite insulation boards are sold both within and outside the province, receiving praise and trust from numerous engineering units, soilless cultivation rice cooperatives, and individual users!