Konoshima Chemical Co., Ltd. is a Japan-based company mainly engaged in the manufacture and sale of construction materials and chemicals. The Company operates in two business segments. The Construction Materials segment manufactures and sells interior and exterior noncombustible construction materials for housing and buildings, such as siding, gables, moldings, and electron beam (EB) coated boards, among others. The Chemical Products segment manufactures and sells magnesium products for flame retardant, calcium products, ceramics products and raw materials for ceramics.