Duoback. 

Duoback Co., Ltd. manufactures and sells office furniture products in South Korea and internationally. It offers student/office, child, gaming, high end, executive, interior, and low chairs, as well as sofas/stools; general/office, standing, gaming, and children's desk; and side and sofa tables, chiffoniers, and storage cabinets under the duo bag, B plus, weinz, Smith S3, Magis, quero, Hypers, Herman Miller, human scale, and long nose brands. The company was formerly known as DBK Co., Ltd. and changed its name to Duoback Co., Ltd. in March 2018. Duoback Co., Ltd. was founded in 1987 and is headquartered in Incheon, South Korea.