The legal person is represented by ma, and its registered address is located in the grand town county east refrigeration village, with the registration authority of the grand town market supervision authority of the city of hong kong, and its operations include processing and marketing of: rock cotton products, glass cotton products, rubber products, aluminium silicate products, silicate products, polyurethane products, foam glass products, foam cement products, blowing cement products, silicon polybenzene plates, asbestos products, roots, rubber plates; sales of: phenoldehyde products, water treatment agents, rubber-specific glues; and maintenance of temperature protection works. (projects subject to legal approval may not operate without the approval of the relevant department)