Southeast Cement Co., Ltd., together with its subsidiaries, manufactures and sells cement in Taiwan. The company operates through four segments: Production Department, Leasing Department, Construction Department, and Engineering Department. It offers portland cement, water-quenched blast furnace slag powder, cement processed products, ready-mixed concrete, furnace powder, limestone, hearthstone powder, raw materials, calcined stone powder, and other related products. The company also engages in the rental business of properties, including land and factories; construction and sale of residential properties; and contracting construction projects. In addition, it is involved in the investment business; real estate leasing; residential and building development, rental, and sales; and waste clearance and disposal. The company was founded in 1956 and is based in Kaohsiung, Taiwan.