OIZUMI Shimonita Co.

What OIZUMI Shimonita Co. does

OIZUMI Shimonita Co., Ltd. (株式会社オーイズミ下仁田) is a Japanese konjac-based food manufacturer and consolidated subsidiary of the OIZUMI Group, founded in 1986 and headquartered in Atsugi, Kanagawa Prefecture with production concentrated in Shimonita Town, Gunma Prefecture. The company manufactures and sells konjac jelly (蒟蒻ゼリー), frozen jelly, 100% fruit juice jelly, konnyaku, shirataki, and dog treats under the Delichien brand, and in June 2026 entered the premium domestic cat food category with the nyam nyam brand co-developed with RINN. Its production technology is rooted in traditional Shimonita Town manufacturing methods using Gunma Prefecture-sourced konjac powder, supported by FSSC 22000 (Version 5) certification at the Interchange Factory and ISO 22000:2018 certification at the Kosaka Packaging Factory, with a fourth factory completed January 2026 and scheduled for full operation in May 2026.

The business operates across three primary revenue streams: branded direct-to-consumer sales through its Rakuten marketplace storefront and Instagram presence, B2B sales to food-industry buyers (retailers, distributors, convenience stores, food service) acquired via major trade shows including FOODEX JAPAN and regional bank food fairs, and OEM/white-label manufacturing for partner brands. Pricing is unit-based across single sachets, assorted packs, and mega packs with no subscription model. The company holds three Shimonita Town Recommended Certified Product designations (No. R7-005, valid through February 2031) and serves health-conscious individual consumers, food-industry B2B buyers, and pet owners across the Kanto region of Japan, with no disclosed international footprint.

Name

OIZUMI Shimonita Co.

Legal name

株式会社オーイズミ下仁田

Website

https://shimonita-bsn.jp

Company type

Private

Founded year

1986

Operating status

Operating

Headcount range

51–100 employees

Short description

OIZUMI Shimonita Co. is a Japanese konjac food manufacturer (founded 1986, ~100 employees) that produces konjac jelly, konnyaku, shirataki, dog treats, and the nyam nyam premium cat food brand, serving health-conscious consumers and B2B food-industry buyers through Rakuten DTC, trade show B2B, and OEM channels.

Ownership category

akta.pro rank

Product category

Konjac and Traditional Japanese Food Products

NAICS

Food Manufacturing (311), Dog and Cat Food Manufacturing (311111), All Other Food Manufacturing (31199)

SIC

Food And Kindred Products (2000), Canned, Frozen & Preservd Fruit, Veg & Food Specialties (2030)

akta.pro primary industry

Frozen & Refrigerated Snack Foods (Ice Cream Novelties, Snack Bites) (CRADABAL)

Keywords

• Konjac food manufacturing
• Shirataki noodle production
• Konjac jelly products
• Pet treat manufacturing
• OEM food production

Headquarters

HQ city

Atsugi

HQ country

Japan

HQ region

Asia

Offices6 records

Markets served

GTM type

B2B and B2C

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Operations, Personnel, Marketing or Sales, Technology or R&D, Infrastructure

Revenue model

1. Food Product Sales: Revenue from manufacturing and selling konjac jelly (蒟蒻ゼリー), frozen jelly (フローズン젤리), 100% fruit juice jelly (果汁100%ゼリー), konnyaku (こんにゃく), shirataki (しらたき), and related food products through e-commerce and B2B channels.
2. Pet Treat Sales: Revenue from dog snack brand 'Délichien' (デリシャン) including jerky, beef tongue sticks, and horse tendon treats, sold through e-commerce.
3. OEM Manufacturing: Custom manufacturing partnerships for brand partners seeking to white-label or develop custom konjac jelly and konnyaku products.
4. Premium Cat Food (nyam nyam): New business segment launched June 2026 - domestic premium cat food 'nyam nyam' (ニャムニャム) developed in collaboration with株式会社RINN and special advisor Yanbara Masahiro, featuring 45%+ high protein, grain-free, additive-free formulation.

Pricing tiers

Go-to-market motion3 records

Distribution channels2 records

Marketing channels3 records

Core offering

Manufactures and sells traditional Japanese konjac-based food products including konjac jelly, frozen jelly, 100% fruit juice jelly, konnyaku, and shirataki noodles under brands such as Konnyaku Kobo, as well as Dèlichien dog treats and the newly launched nyam nyam premium cat food. Products are produced at FSSC 22000 and ISO 22000:2018 certified factories in Shimonita Town, Gunma Prefecture, using locally sourced Gunma konjac powder and traditional manufacturing methods passed down through generations. Distribution occurs through B2B channels (food industry trade shows, OEM partnerships) and direct-to-consumer e-commerce on Rakuten.

Differentiator

Problem solved

Functional benefit

Brands

• 蒟蒻工房 (Konnyaku Kobo): 蒟蒻ゼリーのメインサブブランド。群馬県産こんにゃく粉を使用した蒟蒻ゼリーの製造ブランド。
• ディズ
• nyam nyam（ニャムニャム）

Products and services

• Konnyaku Kobo Konjac Jelly (蒟蒻工房 蒟蒻ゼリー)
• Frozen Jelly (フローズンゼリー)
• 100% Fruit Juice Jelly (果汁100%ゼリー)
• Shimonita Konnyaku and Shirataki (下仁田のこんにゃく / 下仁田のしらたき)
• Dèlichien Dog Treats (デリシャン)
• nyam nyam Premium Cat Food (ニャムニャム)
• OEM Manufacturing Services (OEM 蒟蒻ゼリー・こんにゃく受託製造)

Quantifiable outcome

• Two pieces of ベジタ contain dietary fiber equivalent to approximately 0.8 heads of lettuce
• +1 more outcomes

Segments3 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature2 records

Partnerships

Two partnerships are on record, tiered core and minor.

• 株式会社オーイズミグループ (OIZUMI Group)coreStrategic or Co-development Partner · 1 January 2025Parent company group. On January 1, 2025, the company name changed from 株式会社下仁田物産 to 株式会社オーイズミ下仁田 to strengthen unity as a member of the OIZUMI Group and improve brand recognition across the group. The company is a consolidated subsidiary of OIZUMI Group.
• 株式会社RINNminorStrategic or Co-development PartnerCollaborative development partner for premium cat food brand 'nyam nyam'. Special advisor Yanbara Masahiro (梁原正寛) from RINN contributed to product development. RINN provided expertise in the 2-year development of the cat food product.

Scale indicators4 records

Recent moves8 records

Expansion highlights4 records

Broad incumbents

• Nichirei Foods Inc. Japan's largest frozen food manufacturer with extensive B2B OEM/private-label operations and certifications comparable to OIZUMI Shimonita's FSSC/ISO certifications. Relevant benchmark for OEM business model scaling and food-safety-certified manufacturing capability.
• Calbee, Inc. Japan's largest snack food manufacturer with diversified portfolio including healthy and functional snacks. Comparable as a benchmark for scaling snack brands from regional to national status and as an indicator of competitive intensity in the Japanese snack category where konjac jelly competes.
• Nisshin Petfood Co., Ltd. Major Japanese pet food manufacturer within the Nisshin Seifun group, producing dog and cat food including premium and functional diets. Comparable as the established competitive set OIZUMI Shimonita's nyam nyam brand must displace or differentiate from.
• Inaba Petfood Co., Ltd. Japan's leading pet food manufacturer with broad portfolio across dog and cat food categories, including premium offerings. Comparable to OIZUMI Shimonita's pet treats (Déli dog treats) and newly launched nyam nyam cat food business — represents the competitive landscape for the company's pet food expansion.

Regional players

• Kameda Seika Co., Ltd. Major Japanese snack and rice cracker manufacturer with comparable OEM/white-label services and Japanese retail distribution footprint. Useful benchmark for snack-food brand-building and OEM economics in the domestic market.
• Tsurui Co., Ltd. Japanese konjac and konnyaku food producer based in Gunma Prefecture — the same prefecture as OIZUMI Shimonita's manufacturing base. Comparable regional specialty manufacturer leveraging Gunma's konjac heritage.

Direct peers

• Mannan Life Co., Ltd. Japan's leading konjac-based food manufacturer (mannan/konnyaku noodles, jellies, snacks). Closest direct competitor — same product category (konjac jelly, shirataki), same Japanese retail and OEM channels, and similar heritage-driven brand positioning.
• Marutomo Co., Ltd. Japanese food manufacturer specializing in konjac products (konnyaku, shirataki) and traditional Japanese foods. Direct peer with overlapping product portfolio, Japanese B2B distribution model, and similar small-to-mid-scale manufacturer profile.
• Suzutan Co., Ltd. Japanese konnyaku and konjac food manufacturer with comparable product line including konjac-based snacks and traditional shirataki. Similar small Japanese regional producer profile targeting retail and food service buyers.

Others

• OIZUMI Co., Ltd. (Parent Group): Parent conglomerate of OIZUMI Shimonita Co., operating across diverse businesses. Relevant as the controlling shareholder, capital provider, and strategic decision-maker — not a competitor but a key corporate relationship affecting capital allocation, branding, and exit optionality.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Instagraminstagram.com/shimonita_bsn

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about OIZUMI Shimonita Co.