Rigid polyurethane (PUR) is a low-temperature insulation material formed by chemical reaction through mixing and stirring polyether or polyester with polyisocyanate as main raw materials, supplemented by flame retardants, stabilizers and foaming agents. It has high closed-cell rate and low water absorption. Due to the presence of foaming agent gas with low thermal conductivity in its pores, it has certain heat resistance capability and is commonly used for cold insulation and thermal insulation in low-temperature ranges.

Jiangsu Huasang Thermal Insulation Technology Co., Ltd., established in 2012, is located at No. 1 and No. 18 Victory Road, Chunjiang Town, Xinbei District, Changzhou City, Jiangsu Province (two factory areas). The registered capital is 30 million yuan, and by the end of 2021, the company's annual sales revenue had exceeded 60 million yuan. Jiangsu Huasang Thermal Insulation Technology Co., Ltd. has always been committed to providing advanced cryogenic system professional solutions for a wide range of industrial customers. Main products include thermal insulation materials, cryogenic pipe supports, and cryogenic construction engineering. Jiangsu Huasang Thermal Insulation Engineering Co., Ltd., a wholly-owned subsidiary of Jiangsu Huasang Thermal Insulation Technology Co., Ltd., specializes in deep cryogenic construction services. It holds national second-level anti-corrosion and thermal insulation construction qualifications, system certification certificates, and safety production permits.