Japan Society for Noise Control Engineering Announces 'Environmental Design Award' — 'Shizukanki' Silencer for 24-Hour Ventilation Inlets Wins Award

The 'Shizukanki® (Shizukanki)' silencer for residential and condominium 24-hour ventilation inlets, jointly developed by Miya-chu Co., Ltd. (Sendai City, Miyagi Prefecture; President Keigo Kikuchi) and Taisei Corporation, has been awarded the 2025 'Environmental Design Award' by the Japan Society for Noise Control Engineering, with the award ceremony held on Friday, June 12, 2026. The award recognizes the product's breakthrough patented technology, which dramatically reduces noise in frequency bands previously difficult to address with conventional technologies, while simultaneously enhancing ventilation performance.

(Environmental Design Award Certificate)

About the Environmental Design Award

The 'Environmental Design Award' by the Japan Society for Noise Control Engineering is presented to corporations, groups, or individuals who have achieved outstanding results in improving acoustic and vibration environments, specifically in:

① Planning and implementation cases aimed at enhancing comfort in urban, residential, and working environments

② Related research and technological development

(Source: Japan Society for Noise Control Engineering official website)

The product has been recognized for its design excellence in noise control at ventilation (air intake) openings. It can be easily installed by users from inside the room and functions effectively within the ventilation duct.

'Shizukanki' has previously won multiple awards, including the Good Design Award, the Environmental and Equipment Design Award, and the Miyagi Excellence Product Award, reflecting its acknowledged novelty and innovation. It has already been widely adopted in newly constructed condominiums, hotels, apartments, and detached houses, with over 500 installations across Japan, from Hokkaido to Okinawa.

The company will continue to develop products closely aligned with everyday living.

Product Information: Shizukanki® T-Silent Sleeve

'Shizukanki' is available for purchase by the general public through the official website below.

[Product Website]

https://miya-chu.co.jp/t-silent-sleeve/

[Product Overview]

Product Name: 'Shizukanki®' T-Silent® Sleeve

Specifications: TSS-100SK (for 100φ pipe)

TSS-150SK (for 150φ pipe)

Now available and popular on the official website!

About Miya-chu Co., Ltd.

Miya-chu Co., Ltd. — Sendai Airport Factory (Inawashiro City)

'ONLY ONE' THAN 'NUMBER ONE'

Miya-chu Co., Ltd. specializes in original packaging for construction materials, gardening supplies, and pet products. Additionally, the company manufactures products that solve various residential noise issues. It actively contributes to the local community by hosting internships and workplace experience programs for local students and conducting outreach lectures at high schools and universities. The company also shares its IT/DX implementation case studies for SMEs through collaborations with local government bodies.

[Company Overview]

Company Name: Miya-chu Co., Ltd.

Head Office: Sendai City, Miyagi Prefecture

President: Keigo Kikuchi

Founded: June 1977

Company Website: https://miya-chu.co.jp/

Note: https://note.com/miya_work_study

Ceiling Vibration Damping Material Website: https://miya-chu.co.jp/t-silent-ceiling/

Shizukanki Website: https://miya-chu.co.jp/t-silent-sleeve/

[Company Awards and Recognitions]

・ Certified by Miyagi SME Challenge Support Fund

・ Excellence Award and Judges' Special Award, 2023 National Cloud Practice Awards (Hokkaido-Tohoku Conference)

・ 26th Shichijyuichi New Business Grant Recipient

・ No-Code Promotion Association Award, 2023 National Cloud Practice Awards (National Conference)

・ 16th Miyagi Excellence Product Certification

・ 2024 Good Design Award Recipient

・ Selected by Good Design Award Jury as 'My Chosen Product'

・ 2024 'Youth Empowerment Certified Company' Certification

・ 2025 Disaster Prevention, Mitigation × Sustainability Award Encouragement Prize

・ 13th Tomikenn Miyagi Grand Prix (DX Division Award)

・ 17th Miyagi Excellence Product Certification

・ Healthy Business Certified Organization 2025 (SME Category)

・ 23rd Environmental and Equipment Design Award Recipient

・ 2025 'Youth Empowerment Certified Company' Certification

・ 2025 Mirai no Tane Award Recipient

・ Healthy Business Certified Organization 2026 (SME Category)