Perlite is a glassy rock formed from rapidly cooled acidic lava from volcanic eruptions, named for its pearl-like fracture structure. Perlite deposits include perlite, obsidian, and pitchstone. The differences between them are that perlite has round-arched cracks formed by condensation, known as the perlite structure, with a moisture content of 2~6%; pitchstone has a resinous luster, with a moisture content of 6~10%; and obsidian has a glassy luster and conchoidal fracture, with a moisture content usually less than 2%.

The Xueyin Perlite Factory in Longjiang County is located at the border of Qiqihar City and Longjiang County, specializing in the production of expanded perlite and perlite thermal insulation boards. In 2015, the company invested millions to upgrade equipment and expand the factory, adding new projects such as perlite thermal 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 Baicheng, Jilin; and as far west as Wulanhaote and Tuitong. Since purchasing multiple large transportation vehicles in 2013, we have successfully sold our products to various places in Heilongjiang, Jilin, and Liaoning! Customized thermal 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 thermal insulation boards are sold throughout the province and beyond, receiving praise and trust from numerous engineering users, soilless rice cultivation cooperatives, and individual consumers!