Services
Translation and localization services
Translation, post-editing, translation memory, AI data services, localization and multilingual DTP between Japanese, English and Asian languages, from Tokyo and Ho Chi Minh City.
Language services from one team
Green Sun provides six language services for companies that work between Japanese, English and Asian languages: translation, machine translation post-editing, translation memory, AI data services, website, app and game localization, and multilingual DTP. We are a translation company with offices in Tokyo, Japan and Ho Chi Minh City, Vietnam.
Each service can be ordered on its own or combined. A product launch, for example, might start with translation of the manual, add a translation memory so later updates reuse approved wording, and finish with multilingual DTP so the translated pages match your original design.
Our core work is Japanese and English in both directions, supported by Southeast Asian and Central Asian languages through the same project manager. If you work in a specialist field, see our industry translation pages for the document types we handle.
6Language services
2Offices: Tokyo and Ho Chi Minh City
JA ⇄ ENCore language pair
3Review steps on every project
Choose your language service
Order one service, or combine them as your project grows.
Translation services
Legal, technical, medical and business documents translated by subject specialists between Japanese, English and Asian languages.
Machine translation post-editing (MTPE)
Linguists refine output from Google Translate, DeepL or your own engine into accurate text that is ready to publish.
Translation memory and alignment
We align your past translations into clean translation memories and parallel data for CAT tools and machine translation.
AI data services
Speech and text data collection, transcription, annotation, language data creation and human evaluation for AI teams.
Website, app and game localization
Websites, software, UI and games adapted for Japanese and Asian markets, from strings to store pages.
Multilingual DTP
Translated manuals, brochures and reports laid out again in your original design, ready for print or digital release.
Which service do you need?
A quick guide to matching your content with the right service.
| Service | Choose it when | You send | You receive |
|---|---|---|---|
| Translation services | You need a finished, human-translated document | Source files, glossary and any earlier translations | Translated files in your format, reviewed by a second linguist |
| MTPE | You already use machine translation and need reliable quality | Raw machine translation output or source text | Post-edited text that reads naturally and keeps your terms |
| TM and alignment | You translate often, or want to train machine translation on your own data | Source files and their translations | Aligned data in TMX, Excel or Trados format |
| AI data services | You train, fine-tune or evaluate an AI model | Target language, data type, guidelines and volume | Collected, transcribed, labeled or evaluated data in your format |
| Localization | You release a website, app or game in a new market | Strings, screens, builds or store pages | Localized content tested in context for the target market |
| Multilingual DTP | Translated documents must keep the original design | Editable design files such as InDesign or Illustrator | Print-ready and digital files with layout checked |
Why choose Green Sun
Quality, price, speed and expertise in every service.
Strict quality control
Every project undergoes a 3-step review process, combining native-language experts and advanced QA tools to ensure high accuracy and faster turnaround.
Affordable rates
We offer high-quality services at competitive prices and are the go-to outsourcing partner for many reputable translation companies.
A response within 30 minutes
Reach out to us and receive a reply within 30 minutes, with a full quotation delivered the same day, even for urgent requests.
Specialized expertise in niche fields
Our experienced team handles highly technical and legal documents with precision, delivering consistently accurate and industry-standard translations.
How a project works
The same steps apply to every service, from first file to final delivery.
Project assessment
We review your files, language pair, field and deadline, then confirm scope and approach.
Specialist selection
The project goes to linguists who already work with this kind of content.
Translation
Terms follow your glossary and any earlier translations, so wording stays consistent.
Review and editing
A second linguist reviews the text, and QA tools check terms, numbers and formatting.
Final proofreading and delivery
Files return in the format you use, with layout checked and approved text saved to your translation memory.
FAQ
Translation services: frequently asked questions
What services does Green Sun offer?
Green Sun offers six language services: translation, machine translation post-editing (MTPE), translation memory, AI data services, website, app and game localization, and multilingual desktop publishing (DTP). They can be ordered separately or combined in one project.
Which languages do you work in?
Japanese and English in both directions are our core language pair. We also translate Southeast Asian and Central Asian languages, coordinated by one project manager, so a multilingual project has a single point of contact.
Where is Green Sun based?
Green Sun has offices in Tokyo, Japan and Ho Chi Minh City, Vietnam. Projects are handled by linguists and project managers working across both offices.
How do I choose between translation and MTPE?
Choose translation when the content is sensitive, creative or highly specialized and needs a human translator from the start. Choose MTPE when you already have machine translation output, or large volumes of straightforward text, and want a linguist to bring it up to publishable quality.
What is a translation memory and why would I need one?
A translation memory is a database of approved source and translated sentence pairs. CAT tools reuse it so repeated wording is translated the same way every time, which keeps terminology consistent and reduces effort on later projects.
What are AI data services?
AI data services cover the human work that AI models depend on: collecting speech, text, image and video data, transcribing audio, labeling data, writing language data such as sample questions, answers and dialogues, and evaluating model output. Green Sun provides these for Vietnamese, Japanese and other languages.
How is quality controlled?
Every project follows a three-step review: a specialist translates, a second linguist reviews the text, and QA tools check terminology, numbers and formatting before delivery.
How do I request a quote?
Use the quote form or contact page and give us the language pair, the type of content, the deadline and your files if you have them. We reply with a quote and a plan.
Not sure which service fits?
Tell us the language pair, the content and the deadline. We will recommend a service and reply with a quote.