Profile: Ningbo Yoyo Foam Glass Co., Ltd. is a state petroleum and chemical industry. We are an ISO9001:2000 certified company. We specialize in manufacturing closed-cell foam glass, chromatic sound-absorbing foam glass, FG foam glass bonding agent, rigid polyurethane foam plastics, fireproof mastic, FG deep-cold bonding agent, phenolic foam, rock-wool, and alumina silicate. Our products are used in oil, fertilizers, chemicals, ethylene, textile, chemical fiber, medicine, paper, guest houses, hotels, refrigerator, iron and steel, power grids, power plants, and pipelines ventilation industries. Our foam glass is a new kind of inorganic heat insulating material with a structure of equally closed cells. It is widely applied in chemical industry, architecture, and underground projects, and is a kind of porous, organic material. Our sound-absorbing foam glass is light, non-combustible, and non-corrodible. It is used to improve articulation in waiting room, store, and exhibition hall, and also in mufflers.