SIG Service
SIG Service operates Doorzo, a cross-border proxy purchase platform that lets international consumers in 190+ countries buy from 500+ Japanese e-commerce sites, handling translation, payments, warehousing, and international shipping on the consumer's behalf.
- Company typePrivate
- Founded2013
- HeadquartersTokyo, Japan
- Headcount—
- GTM typeB2C
- OfferingServices
What SIG Service does
SIG Service 株式会社 operates Doorzo, a cross-border proxy purchase platform launched in August 2015 that enables international consumers in 190+ countries — with mainland China as the primary market — to buy from 500+ Japanese e-commerce sites (Amazon Japan, Mercari, Rakuten, LINE Yahoo, SNKRDUNK, Bookoff, Suruga-ya, etc.) without needing Japanese language skills, international payment methods, or direct shipping capability. Doorzo purchases on the consumer's behalf, inspects and consolidates goods at its automated logistics center, then ships internationally via EMS, FedEx, DHL, and ZTO Express, accepting Alipay, WeChat Pay, and PayPal. The business model charges consumer-facing proxy purchase fees, international shipping fees, and payment processing fees; Japanese EC sellers list products for free with no sales commission, making Doorzo a zero-cost international distribution channel for sellers and a fee-based service for buyers. Revenue over the decade since founding reached ¥80 billion cumulatively, with 2025 reported as the strongest year.
The technology stack centers on a multilingual consumer platform (iOS/Android app and website) with automatic Japanese-to-foreign-language product page translation, integrated with logistics orchestration, multi-currency payment processing, and chat-based multilingual customer support. In April 2025, SIG Service deployed Plus Automation's AirRob robotics automated warehouse at its relocated GLP Misato II fulfillment center, improving picking accuracy and throughput. In August 2025 it entered a joint development partnership with TOYOROBO to build integrated WMS/WCS/WES warehouse software, with closed beta planned for Q1 2026 and general availability in H2 2026, signaling intent to productize internal logistics IP beyond Doorzo operations. Headquartered in Tokyo (Chiyoda-ku) with overseas support branches in Chengdu and Hong Kong, the company is founder-controlled by CEO Zhang Zhang, privately held with no disclosed institutional investors or funding rounds, and operates with approximately 80 regular employees and ~200 total workers including part-time and contract staff. The company is listed on the 2025 EC-related services chaos map published by industry outlet Mvsk.
SIG Service firmographics
Firmographics- Name
- SIG Service
- Legal name
- SIG Service Inc.
- Website
- https://sig-service.co.jp
- Company type
- Private
- Founded year
- 2013
- Operating status
- Operating
- Short description
- SIG Service operates Doorzo, a cross-border proxy purchase platform that lets international consumers in 190+ countries buy from 500+ Japanese e-commerce sites, handling translation, payments, warehousing, and international shipping on the consumer's behalf.
- Ownership category
- akta.pro rank
SIG Service industry classification
Industry- Product category
- Cross-Border E-commerce Proxy Purchase Service
- NAICS
- Couriers and Express Delivery Services (492110)
- akta.pro primary industry
- Order Visibility, Status Notifications & Customer Tracking Portal (TLAEACAL)
Keywords
Where SIG Service is headquartered
LocationHeadquarters
- HQ city
- Tokyo
- HQ country
- Japan
- HQ region
- Asia
Offices4 records
Markets served
SIG Service business model
Business model- GTM type
- B2C
- Offering type
- Services
- Cost components
- Personnel, Operations, Technology or R&D, Infrastructure, Marketing or Sales, Supply Chain
Revenue model
- Proxy Purchase Service Fees (from International Consumers): SIG Service charges international consumers a service fee for proxy purchasing Japanese products. This is the primary revenue stream. Japanese EC site sellers receive payments directly; SIG earns from the consumer side of the transaction through its proxy purchase service fee.
- International Shipping Fees: Revenue is generated from international shipping fees charged to consumers for the delivery of purchased goods from Japan to their destination countries using carriers such as EMS, FedEx, DHL, ZTO Express, and ECMS
- Payment Processing Fees: Fees collected for handling international payment processing including Alipay, WeChat Pay, and PayPal transactions
- Value-Added Services (Customs Support, Consolidation): Additional services such as consolidated shipping (combining items from multiple EC sites into one package) and premium support services may generate supplementary revenue
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Other | Other | Free listing for Japanese EC sellers |
Go-to-market motion3 records
Distribution channels4 records
Marketing channels5 records
SIG Service product offering
Product offeringCore offering
SIG Service operates Doorzo, a cross-border proxy purchase platform that purchases products on behalf of international consumers from 500+ Japanese e-commerce sites. Doorzo handles multilingual translation, international payment processing (Alipay, WeChat Pay, PayPal), quality inspection, consolidated packaging at its robotics-automated warehouse in Misato, and international shipping via DHL, EMS, FedEx, ZTO Express and other carriers to customers in 190+ countries.
Differentiator
Problem solved
Functional benefit
Brands
- Doorzo: Cross-border proxy purchasing service that enables international customers to purchase products from Japanese e-commerce sites and have them shipped abroad.
Products and services
- Doorzo Proxy Purchase Service A full-service cross-border proxy purchase platform that buys products on behalf of international consumers from 500+ Japanese e-commerce sites. Handles multilingual browsing, payment processing (Alipay/WeChat Pay/PayPal), quality inspection, consolidated packaging at an automated warehouse, and international delivery to 190+ countries.
- Doorzo Mobile App Consumer-facing mobile application for international users to browse Japanese EC products, place proxy purchase orders, track shipments, and access multilingual customer support. Available globally via app stores.
Quantifiable outcome
- ¥80 billion in cumulative revenue over the decade since founding, with 2025 marking the strongest year
- +3 more outcomes
Companies that use SIG Service
Customer profileNamed customers11 records
Segments3 records
Ideal customer profiles2 records
SIG Service technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Integration17 records
AI capability3 records
Feature6 records
SIG Service partnerships and signals
Strategic signalPartnerships
18 partnerships are on record, tiered core, major and minor.
- TOYOROBO株式会社coreSIG Service and TOYOROBO entered into a business partnership agreement dated August 14, 2025 for the joint development of integrated WMS/WCS/WES (Warehouse Management/Control/Execution System) software. The partnership aims to provide a neutral multi-vendor integration platform enabling rapid warehouse deployment and flexible operations. Target: closed beta in Q1 2026, general availability in H2 2026.
- Amazon Japan (.amazon.co.jp)majorOfficial partnership with Amazon Japan enabling Doorzo users to purchase products from Amazon Japan's extensive EC catalog through the Doorzo platform. Doorzo acts as a purchasing intermediary for international consumers on Amazon Japan.
- LINE雅虎 (Yahoo!フリマ & Yahoo!オークション)majorOfficial partnership with LINE Yahoo Corporation integrating Yahoo! Flea Market and Yahoo! Auctions with the Doorzo platform, enabling international buyers to access these popular Japanese resale marketplaces.
- 株式会社SODA (SNKRDUNK)majorFormal partnership with SNKRDUNK (operated by SODA Inc.) integrating the sneaker, trading card, and apparel marketplace with Doorzo. System integration enables Doorzo users to search, browse, and purchase SNKRDUNK products in foreign languages with Alipay and WeChat Pay support.
- AirRob (Plus Automation株式会社)coreSIG Service deployed Plus Automation's AirRob robotics automated warehouse system at its GLP Misato II logistics center. AirRob combines high-density storage with high-throughput picking to improve picking accuracy, operational efficiency, and reduce mis-shipments. This is a core operational technology partnership.
- 雷市場 (Pojang / らいいち)minorPartnership with the Japanese online marketplace '雷市場 (Raichijo/Pojang)' enabling Doorzo users to access the platform's products internationally.
- 株式会社駿河屋 (Suruga-ya)majorOfficial partnership with Suruga-ya (formerly A2 Inc.), Japan's largest hobby goods and entertainment retailer, enabling Doorzo users to access Suruga-ya's extensive catalog of anime, manga, and hobby products internationally.
- 株式会社らしんばん (Lashinban)minorPartnership with Lashinban, a Japanese hobby and collectibles retailer, for international sales via Doorzo platform.
- ブックオフコーポレーション (Bookoff)majorOfficial partnership with Bookoff Corporation enabling Doorzo to offer pre-owned books, media, games, and goods from Bookoff's nationwide stores to international consumers.
- GMOペパボ (minne)minorPartnership with GMO Pepabo's minne handmade and creative goods marketplace for international sales through Doorzo.
- rehello by BOOKOFFminorPartnership with Bookoff's rehello brand (sustainable fashion resale) enabling international access to rehello's curated pre-owned fashion items.
- 株式会社ソフマップ (Sofmap)minorPartnership with Sofmap's 'Ricore!' service for international sales of pre-owned anime, games, and electronics through Doorzo.
- 株式会社トラストハブ (Clove)minorPartnership with Trust Hub's Clove brand for international sales through Doorzo.
- 株式会社メルカリ (Mercari)majorOfficial partnership with Mercari, Japan's largest consumer-to-consumer marketplace, enabling Doorzo users to purchase items from Mercari sellers internationally.
- 株式会社晴れる屋 (Hareruya)minorPartnership with Hareruya (trading card game and hobby products) enabling international sales through Doorzo.
- 楽天グループ (Rakuten — ラクマ)majorPartnership with Rakuten Group's Rakuma resale service enabling Doorzo users to access Rakuma marketplace listings internationally.
- 株式会社ジラフ (magi)minorPartnership with Gilf Inc.'s magi used goods platform for international sales through Doorzo.
- DHL Japan & ZTO ExpresscoreLogistics partnerships with DHL Japan and ZTO Express for international shipping of purchased goods from Japan to customers worldwide, including China. These partnerships form the core logistics infrastructure for Doorzo's international delivery service.
Scale indicators7 records
Recent moves10 records
Expansion highlights5 records
SIG Service competitors and assessment
Company assessmentDirect peers
- Malltail: Malltail is a Japan-based proxy buying and package forwarding service that lets international users purchase from Japanese EC sites, with consolidated shipping and tracking — directly comparable to Doorzo's consumer-facing cross-border fulfillment.
- Jauce: Jauce is a Japan-based auction proxy service specializing in Yahoo Auctions Japan purchases for international buyers, with English-language interface and international shipping — directly comparable to Doorzo's auction/marketplace proxy purchase service.
- Neokyo: Neokyo is a Japan proxy buying service aimed at international customers purchasing from Japanese marketplaces and retailers, offering consolidated shipping and customer support — same model and target customer as Doorzo.
- Japan Rabbit: Japan Rabbit is a Japan-based proxy purchase service targeting international buyers of Japanese goods with similar seller partnerships and international shipping — directly comparable to Doorzo's niche.
- FromJapan: FromJapan is a Japanese proxy shopping service that consolidates purchases from multiple Japanese retailers (Yahoo Auctions, Amazon Japan, etc.) and ships them to international buyers — same business model as Doorzo with similar seller integrations and international shipping focus.
- ZenMarket: ZenMarket is a Japan-based proxy buying and auction service that purchases items from Japanese marketplaces (Yahoo Auctions, Amazon Japan, Rakuten, etc.) on behalf of overseas customers and forwards them internationally — directly comparable to Doorzo's core workflow.
- Buyee (BEENOS / Tenso): Buyee is a Japanese cross-border proxy purchase service operated by BEENOS Inc. that buys on behalf of international consumers from Japanese EC sites (Mercari, Rakuten, Yahoo Japan) and ships globally — the closest direct competitor to Doorzo's proxy purchase model.
Broad incumbents
- Amazon Japan (Amazon.co.jp international shipping): Amazon Japan's international shipping program allows overseas buyers to purchase directly from Amazon Japan, bypassing the need for a proxy service like Doorzo — a broad incumbent that competes with Doorzo by offering native cross-border purchasing.
- Rakuten International Shipping (Rakuten Global Express): Rakuten's cross-border e-commerce and international shipping program lets international buyers purchase directly from Rakuten Japan merchants — competes with Doorzo at the marketplace level for cross-border consumer orders.
Emerging players
- Shipito: Shipito is a US-based package forwarding and assisted purchase service that helps international buyers purchase from US retailers — similar business model (proxy purchase + international shipping), but US-anchored and not a direct competitor for Japanese goods.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat6 records
Key risks5 records
Key highlights6 records
Customer concentration
SIG Service social profiles
Digital presenceSIG Service financial estimates
Financial estimateRevenue estimate
Valuation estimate
SIG Service leadership team
Management profileNumber of profiles
Profiles1 record
SIG Service funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
SIG Service M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about SIG Service
What does SIG Service do?
SIG Service operates Doorzo, a cross-border proxy purchase platform that purchases products on behalf of international consumers from 500+ Japanese e-commerce sites. Doorzo handles multilingual translation, international payment processing (Alipay, WeChat Pay, PayPal), quality inspection, consolidated packaging at its robotics-automated warehouse in Misato, and international shipping via DHL, EMS, FedEx, ZTO Express and other carriers to customers in 190+ countries.
Is SIG Service a public or private company?
SIG Service is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was SIG Service founded?
SIG Service was founded in 2013.
Where is SIG Service based?
SIG Service is headquartered in Tokyo, Japan, in the Asia region.
How does SIG Service make money?
Four revenue lines are on record. Proxy Purchase Service Fees (from International Consumers) is the primary driver. The others are international Shipping Fees, payment Processing Fees and value-Added Services (Customs Support, Consolidation).
Who are SIG Service's main competitors?
Direct peers on record are Malltail, Jauce, Neokyo, Japan Rabbit, FromJapan, ZenMarket and Buyee (BEENOS / Tenso). Broad incumbents are Amazon Japan (Amazon.co.jp international shipping) and Rakuten International Shipping (Rakuten Global Express). Shipito is listed as an emerging player.
Does SIG Service have an API?
No public API is recorded for SIG Service.
What industry is SIG Service in?
SIG Service's product category is Cross-Border E-commerce Proxy Purchase Service. Its primary akta.pro industry code is TLAEACAL, Order Visibility, Status Notifications & Customer Tracking Portal. Its NAICS code is 492110.