This article explores the design philosophies of the classic Danish hardware brand d line, as well as those of architects Arne Jacobsen and Knud Holscher. It documents the process of selecting solid stainless steel hardware from international suppliers, as well as the detailed integration work required to ensure compatibility between European-standard door handles and Taiwanese mortise locks.

Designed in 1968 by Danish architectural master Arne Jacobsen, the VOLA HV1 basin faucet has become a timeless classic thanks to its minimalist aesthetic, which conceals its mechanical components. This article documents the logic behind the selection of hardware for the bathroom space at the Li Residence in Zhishan, exploring how pure design is integrated through meticulous craftsmanship to enhance the functionality of daily bathing and washing routines.