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 difference between them lies in the round arc-shaped cracks formed by condensation in perlite, 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: throughout Heilongjiang Province, including Harbin, Daqing, and the surrounding areas of Qiqihar; as far north as Manzhouli and Mohe; as far south as Bai City, Jilin; and as far west as Wulanhaote and Tuitang. Since 2013, after purchasing multiple large transport vehicles, we have successfully sold our products to many places in Heilongjiang, Jilin, and Liaoning! Custom insulation boards have also opened up the southern market! Over the years, we have continuously innovated with high-tech methods to improve product quality. Perlite and perlite insulation boards are sold throughout the province and beyond, receiving praise and trust from numerous engineering units, rice soilless cultivation cooperatives, and individual users!