Cai-In Interior Design Co., Ltd.

Cai-In Interior Design, the Taoyuan practice behind 綵韻室內設計 (Cai-Yun Interior Design) and known as CIID, an acronym for Creativity Innovation Interior Decoration, keeps design and construction teams in house, led by design director Chin-Feng Wu from offices in the Zhongli and Taoyuan districts.

The studio reads design as a way of conveying attitude and giving living aesthetics a physical form, shaping ambience, circulation, style and material quality so occupants experience a space through all five senses. Its Shared Joy scheme, a cross-generational shared living platform for a collective residence, won iF Design Awards in Residential Interiors in 2025 and 2026; the practice also holds a Japan Good Design Award and an APIDA excellence award for institutional space.