The scope of the operation includes radiation protection works, electromagnetic shielding works, medical purification works, air purification works, decorating works, steel structural engineering designs, construction works; radio protection equipment, radiation protection doors and windows, production, sale and installation of radiation protection lead glass; lead doors, lead plates, lead clothing, radiation-proof lead screens, and lead products for one or two types of medical equipment, sales and installation of anti-radiation boards, composite protection plates; and sale of plates, pipes and metal materials。