Seven treasures in Japanese.
"As well as the comfort of the sound space within the space, harmony and auspiciousness must also be felt visually." This concept was reflected in Shippo.
A three-dimensional Shippo pattern appears by combining four or more pieces. Shippo refers to the seven kinds of treasures that appear in Buddhist scriptures, including gold, silver lapis lazuli, crystal, mantis shrimp, coral, and agate.
It is an auspicious pattern with wishes for harmony, and good luck in this pattern, in which circles are endlessly linked.
Sound absorption coefficient
ZAMA - acoustic products