Goldsun Building Materials Co., Ltd., together with its subsidiaries, engages in the production and sale of premixed concrete, cement, and calcium silicate board in Taiwan and Mainland China. It operates through Pre-Mixed Concrete Segment in Taiwan, Pre-Mixed Concrete Segment in Mainland China, and Others segments. The company also constructs civil and architectural construction projects; and provides international trading, warehousing, shipping, and tally packaging, interior decoration, and leisure frame management services. In addition, it rents real estate properties; operates hotels; and sells building materials. The company was formerly known as Goldsun Constructions Co., Ltd. Goldsun Building Materials Co., Ltd. was incorporated in 1954 and is headquartered in Taipei, Taiwan.