What GREEN HOUSE does

Green House Co., Ltd. (株式会社グリーンハウス) is a Tokyo-based Japanese consumer electronics and lifestyle product manufacturer founded in 1998, operating a broad, horizontally diversified portfolio across PC peripherals (memory cards, USB storage, LCD monitors, monitor arms, mouse pads, cables), kitchen and lifestyle appliances (ultrasonic beer servers, hot sandwich makers, ice shavers, sous vide cookers, food smokers), personal cooling devices (hand fans with Peltier cooling plates), mobile power products (quasi-solid, gel electrolyte, and lithium iron phosphate batteries), smart accessories (Apple Find My and Google Find Hub smart tags, security locks), AV equipment (televisions, portable Blu-ray/DVD players), and IoT/wireless components (LoRa/LoRaWAN modules, Armadillo-IoT products). The company competes on proprietary technologies — notably Misty Bubbles ultrasonic foam (58kHz) with two granted Japanese patents, Peltier cooling plate integration, and safety-focused battery chemistries — supported by ISO 9001/14001/27001 triple certification.

Revenue is generated primarily through one-time hardware sales distributed via four channels: a direct e-commerce storefront (Greenhouse Store), Rakuten Marketplace, Yahoo! Shopping, and Amazon Japan, all under an open-pricing (オープンプライス) model in which retailers set final consumer prices. A B2B custom imprint service (名入れサービス) provides corporate-branded products with minimum order quantities of 100 units for existing SKUs and 3,000 units for new production runs, adding a smaller but structured enterprise revenue layer. The company is privately held, led by Representative Director Takeshi Ozawa, and serves both individual consumers and corporate customers across Japan; geographic operations are Japan-domestic, with warranty explicitly limited to Japan and no disclosed international distribution footprint.

Name

GREEN HOUSE

Legal name

株式会社グリーンハウス

Website

https://green-house.co.jp

Company type

Private

Founded year

1998

Operating status

Operating

Headcount range

101–250 employees

Short description

Green House Co., Ltd. is a privately held Japanese consumer electronics and lifestyle product manufacturer selling PC peripherals, kitchen appliances, personal cooling devices, mobile batteries, and IoT modules through its own e-commerce store and major Japanese marketplaces, serving individual consumers and corporate imprint customers in Japan.

Ownership category

akta.pro rank

Product category

Consumer Electronics

NAICS

Small Electrical Appliance Manufacturing (335210), Small Electrical Appliance Manufacturing (33521), Furniture, Home Furnishings, Electronics, and Appliance Retailers (449)

SIC

Electric Housewares & Fans (3634), Household Audio & Video Equipment (3651), Household Appliances (3630)

akta.pro primary industry

Home Energy & EV Charging (HEMS, Smart Meters, Batteries, Chargers) (HSAPAQAF)

akta.pro secondary industry

Outdoor & Specialty Major Appliance Retail (Outdoor Kitchens, Grills, Ice Makers) (CRACACAG)

Keywords

• Consumer electronics manufacturing
• PC peripherals
• Kitchen appliances
• AV equipment
• IoT wireless modules

Headquarters

HQ city

Tokyo

HQ country

Japan

HQ region

Asia

Offices2 records

Markets served

GTM type

B2B and B2C

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Hardware Product Sales: Green House generates revenue through one-time hardware product sales across multiple categories including PC peripherals, AV equipment, kitchen appliances, IoT devices, and lifestyle products. Products are sold at open price (オープンプライス) through direct e-commerce and marketplace channels.
2. Custom Imprint Services (名入れサービス): Corporate branding and customization services where companies can order products with custom logos, labels, or branding. Available for products like hand beer servers with minimum order quantities starting from 100 units for standard items and 3,000 for new orders.
3. Accessories and Consumables: Sales of accessories, spare parts, and consumables such as replacement batteries, charging cables, ice molds, smoke chips, and maintenance supplies through their online store and marketplace channels.

Pricing tiers

Go-to-market motion2 records

Distribution channels5 records

Marketing channels5 records

Core offering

Green House is a Japanese manufacturer that designs, produces, and sells a broad range of consumer electronics and lifestyle goods including PC peripherals (LCD monitors, monitor arms, memory cards, storage, glass mouse pads, security cables), AV equipment (televisions, portable Blu-ray/DVD players, audio players), personal cooling devices (hand fans with Peltier cooling plates and quasi-solid batteries), kitchen appliances (ultrasonic beer servers, hot sandwich makers, sous vide cookers, food smokers, electric ice shavers, instant water servers, soda makers), smartphone accessories, mobile batteries, smart tags, Sanrio character smartwatches, digital signage, and IoT/LoRaWAN wireless modules. The company also provides a custom imprint (名入れ) corporate-branding and OEM service for bulk orders on these products.

Product overview

Green House (グリーンハウス) is a Japanese consumer electronics manufacturer offering a diverse portfolio of PC peripherals, AV equipment, and kitchen/lifestyle products. The product lineup includes: PC accessories such as monitor arms, LCD displays, memory cards (SD/SDHC/SDXC with UHS Speed Class 3 for 4K recording), glass mouse pads, and security cable locks; personal cooling devices including multiple hand fan series (GH-FANHDA with Sanrio characters, GH-FANHHW/HHX Peltier hand fans, GH-FANHDB high-speed models); kitchen appliances including beer servers (stand, handy, and party types with ultrasonic foam technology), hot sandwich makers (single and dual plate), electric ice shavers, sous vide cookers, and food smokers; smart devices including Sanrio character smartwatches and item tracking tags compatible with Apple Find My and Google Find Hub; mobile batteries featuring gel electrolyte and lithium iron phosphate technologies for enhanced safety; and IoT solutions including LoRa/LoRaWAN wireless modules and Armadillo-IoT products. The company also offers digital signage, custom branding services, and OEM solutions.

Differentiator

Problem solved

Functional benefit

Products and services

• Peltier Hand Fans (GH-FANHHW / GH-FANHHX Series) USB rechargeable portable hand fans with built-in Peltier cooling plates for personal cooling; consumers and corporate buyers via the direct store and major Japanese marketplaces.
• Sanrio Characters Hand Fan (GH-FANHDA Series) Compact hand fan with night-light function and character design licensing via Sanrio collaboration; for character-merchandise consumers and gift buyers.
• High-Speed Cooling Hand Fan (GH-FANHDB Series) Compact high-speed hand fan with Peltier cooling plate and digital display for users who want stronger airflow and visible battery/mode status.
• Quasi-Solid Battery Hand Fan with Cooling Plate Hand fan with Peltier cooling plate powered by a quasi-solid battery for safety-conscious personal cooling use.
• Stand Beer Server (GH-BEERST Series) Tabletop ultrasonic beer server that uses 58kHz Misty Bubbles vibration to create creamy, freshness-preserving heads from cans and bottles, for home beer enthusiasts.
• Handy Beer Server (GH-BEERNS Series) Portable ultrasonic beer server that attaches to a can to generate creamy foam on the go, for individual beer enthusiasts and home entertaining.
• Party Beer Server (GH-BEERG Series) High-capacity ultrasonic party beer server for group entertaining, holding up to 6 cans with integrated cooling pack.
• 3-Way Tumbler Beer Server Industry-first 3-way tumbler-style beer server for varied serving formats.
• Compact Stand Beer Server Compact ultrasonic stand-style beer server for improved at-home beer taste.
• Hot Sandwich Makers (GH-HOTSA / GH-HOTSB Series) Countertop electric sandwich makers in single- and dual-plate versions with Brooklyn styling and removable non-stick plates, for home-cooking users.
• Sous Vide Cooker (GH-SVMA Series) Low-temperature sous vide cooking device for precise temperature-controlled home cooking.
• Food Smoker (GH-SMKB Series) and Drink & Food Smoker Cold-smoking compact battery-powered appliance for adding smoke flavor to seafood, cheese, nuts, and beverages at home.
• Electric Ice Shaver (GH-SIMA Series) Rechargeable electric ice shaver usable handheld or freestanding with adjustable texture control, including ice molds and cleaning brush, for home shaved-ice preparation.
• Instant Hot Water Server (GH-HWS Series) Instant countertop water heater that dispenses near-instant hot water (~1 second) for tea, coffee, and instant-meal preparation at home or in offices.
• GH-SSBTPA Series Mobile Battery Mobile battery using gel-electrolyte chemistry to improve safety and thermal stability for smartphone and small-device charging on the go.
• Lithium Iron Phosphate Mobile Battery (GH-LFBTA Series) Mobile battery using lithium iron phosphate (LiFePO4) cell chemistry with PD20W fast-charging support for safety-focused charging applications.
• Quasi-Solid Battery Mobile Battery Mobile battery using quasi-solid state battery technology that materially reduces fire risk for charging small devices.
• iPhone Find My Smart Tag Bluetooth item-tracking smart tag compatible with Apple's Find My network for locating keys, bags, and other personal items.
• Smart Tag with Google Find Hub Support (DiGL lite) Bluetooth item-tracking smart tag compatible with Google's Find Hub network, for Android users locating keys, bags, and other personal items.
• Sanrio Characters Smartwatch Series Character-licensed smartwatches featuring Hello Kitty, My Melody, Cinnamoroll, and Kuromi designs for character fans and gift buyers.
• 21.5-inch Wide LCD Monitor (120Hz) 21.5-inch widescreen 120Hz LCD monitor for office, productivity, and home use.
• Television (GH-TV Series) Consumer televisions ranging from 24-inch to 65-inch displays for home viewing.
• Monitor Arms (GH-AMGA Series) Gas-spring and mechanical-spring single- and dual-screen monitor arms for office ergonomic and free-address desk setups.
• TV Wall Mounts (GH-TVWMR Series / Single-Arm TV Wall Mount) Adjustable single-arm TV wall-mount bracket for various television sizes.
• SDXC/SDHC Memory Cards (GH-SDXCUC / GH-SDHCUC Series) UHS Speed Class 3 SDXC/SDHC memory cards in 8GB–256GB capacities for 4K video recording and high-speed camera use, backed by a 3-year warranty.
• Glass Mouse Pads (GH-GMPW / GH-GMPC Series) Durable reinforced-glass mouse pads for smooth, precise sensor tracking at office and gaming setups.
• Security Wire Locks (GH-NWKA / GH-NWDA Series) Cylinder- and dial-lock security cables for theft prevention of laptops and LCD monitors in offices and public spaces.
• Digital Signage / Electronic POP Digital signage and electronic POP display solutions—including small-format displays, audio POP, media players, and video pamphlets—for retail and commercial use.
• IoT / LoRaWAN Wireless Modules and Sensors LoRa/LoRaWAN wireless modules, sensors, antennas, development tools, and Armadillo-IoT components for industrial IoT and LPWAN deployments.
• Custom Imprint (名入れ) Corporate Branding Service B2B custom-imprint and OEM/branding service allowing companies to apply logos, colors, and packaging to Green House products with minimum order quantities (100 units for stocked items, 3,000 units for new production) for promotional and corporate gifting use.
• Portable Blu-ray / DVD Players Portable Blu-ray and DVD players for mobile entertainment and travel viewing.
• Soda Maker Countertop soda maker for home carbonation of water and beverages.
• Sanrio Licensed Hand Fan Line (Sanrio Character Cooling Collaboration) Sanrio-licensed line of character-branded hand fans with cooling plates, produced under OEM/whitelabel licensing with Sanrio Co., Ltd. for character merchandise buyers.

Quantifiable outcome

• 96% of consumers surveyed rated Green House beer servers as making beer taste better in street taste tests
• +1 more outcomes

Segments2 records

Ideal customer profiles2 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

One partnership is on record.

• Sanrio Co., Ltd.minorOEM/ Whitelabel/ Licensing Partner · 8 May 2026Licensed collaboration to produce Sanrio character-branded products including Hello Kitty, Cinnamoroll, Kuromi, and Pompompurin themed cooling plate hand fans. Products feature character designs on packaging and product bodies with official licensing approval.

Scale indicators3 records

Recent moves6 records

Expansion highlights4 records

Broad incumbents

• Sony: Sony is the incumbent Japanese consumer-electronics giant spanning AV equipment, audio, and home entertainment. Broad incumbent overlap in TVs, portable Blu-ray/DVD players, and audio categories where Green House participates.
• Zojirushi: Zojirushi is a Japanese premium kitchen-appliance and lifestyle brand (water servers, thermos, kitchen). Adjacent overlap through Green House's instant hot-water server and broader kitchen/lifestyle portfolio.
• Sharp: Sharp is a Japanese incumbent in consumer electronics and home appliances. Overlap in LCD monitors and televisions, kitchen appliances, and small consumer devices.
• Panasonic: Panasonic is a Japanese incumbent across consumer electronics, kitchen appliances, and batteries. Broad overlap in kitchen appliances (beer servers, sandwich makers, ice shavers), mobile batteries, and AV/lifestyle categories.

Direct peers

• Elecom: Elecom is the leading Japanese manufacturer of PC peripherals, smartphone accessories, and digital lifestyle products. Direct overlap on memory cards, mouse pads, monitor arms, USB storage, and cables, distributed through the same Japanese e-commerce and retail channels.
• Thanko: Thanko is a Japanese manufacturer/retailer of quirky consumer electronics and lifestyle gadgets (PC accessories, kitchen gadgets, personal cooling, IoT) sold largely direct-to-consumer. Product mix, channel approach (D2C plus marketplaces), and Japanese mid-market positioning make Thanko the closest functional analog to Green House.
• I-O Data Device: I-O Data Device is a Japanese maker of displays, storage, memory cards, and networking products. Strong overlap in LCD monitors, memory cards, and PC peripherals categories.
• Anker Japan (Anker Innovations): Anker Japan is the dominant Japanese-market mobile battery and consumer-charging brand. Direct overlap on mobile batteries and chargers, including the same premium safety-battery segment Green House is targeting with quasi-solid and lithium iron phosphate chemistries.
• Buffalo (Melco Holdings): Buffalo is a long-established Japanese manufacturer of storage, networking, and PC peripherals (USB memory, SSDs, monitors, monitor arms). Direct overlap on memory/storage SKUs and Japanese consumer-electronics distribution.
• Sanwa Supply: Sanwa Supply is a Japanese PC peripherals and B2B device-accessory specialist offering monitor arms, security cables, mice, keyboards, and AV accessories. Comparable catalog and corporate/B2B catalog positioning.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/GREENHOUSE_pr
• Instagraminstagram.com/greenhouse_jp
• LinkedInlinkedin.com/company/green-house-builders

Compliance3 records

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 GREEN HOUSE