Purple Triangle - CAD Drawing AI Translation Tool, Supporting Chinese-English Mutual Translation

What is Purple Triangle

Purple Triangle (zsj) is an online CAD drawing translation tool based on AI large models. Users directly upload DWG source files, and after cloud parsing, the platform translates the drawing text into the target language. The output remains an editable DWG vector file, with layers, annotations, and dimension lines fully preserved, and the drawing can be modified after translation. Purple Triangle supports Chinese-English mutual translation and bilingual comparison output, charges by the number of translated characters, and covers terminology across all industries such as architecture, machinery, and chemical engineering. It is suitable for overseas bidding, multi-industry design institutes, and teams that need to communicate drawing conversion with overseas clients.

Main Features of Purple Triangle

How to use Purple Triangle

• Visit the official website: Visit the Purple Triangle official website https://www.zsj.cn/ to enter the Purple Triangle website homepage.
• Register and log in: Complete registration/login with mobile phone number + password or verification code (220 translation coins given for first registration).
• Enter the translation page: After logging in, click the "Use" button to enter the translation operation page.
• Upload files: Click the "Upload File" area and select the prepared lower-version DWG file.
• Translation settings: Select the translation engine, industry specialty, enter block names not to be translated, set source/target languages, translation mode, and text scale.
• Extract text: Click the "Extract Text" button, wait about 2 minutes, then refresh the page to view the extracted source text list.
• Confirm translation: Check the content to be translated, click the "Translate" button, and wait about 2 minutes for the result.
• Download results: Click "File Management" in the upper left corner → "Completed", check the file, and click "Download".
• Unzip and use: Unzip the downloaded package and open it with AutoCAD out_xxx.dwg(complete file) or out_new_xxx.dwg(independent text), then save as after minor layout adjustments.

Core Advantages of Purple Triangle

• DWG entity-level translation, still editable after translation: Directly processes DWG source files and outputs editable DWG vector format, with all layers, annotations, and dimension lines fully preserved, editable by double-clicking, completely leaving PDF image-level solutions behind.
• High translation accuracy: Based on large AI models, industry terminology is matched precisely, with accuracy above 95%, and special symbols are fully preserved.
• Practical bilingual output: Supports three modes: translation only, translation + original, and original + translation. Chinese and foreign parties can review the same drawing, all in one drawing.
• Block locking saves cost: You can specify blocks such as drawing frames and title blocks not to be translated, avoiding mistranslation while greatly reducing the number of translated characters and saving costs.
• Independent text output: Simultaneously generates a DWG file containing only the translated text, making it easy to copy back into the source file for secondary editing and layout.
• Full industry coverage: Terminology libraries for all industries including architecture, MEP, machinery, chemical, electronics, transportation, and municipal engineering, handling multi-disciplinary needs on one platform.

Comparison of Zi San Jiao with similar competitors

Application scenarios of Zi San Jiao

• Delivery of overseas English versions of design documents: General overseas projects and foreign engineering projects all require delivery of English versions of design documents, and involve many disciplines. Design units can use the Zi San Jiao platform to easily solve the troubles caused by the efficiency of Chinese-English conversion in drawing versions and professional terminology. There is no longer any need to hire high-priced professional translation teams; you can easily handle it yourself.
• Chemical/municipal/water conservancy machinery/product design overseas communication:Chemical, municipal, water conservancy, mechanical design, and product design enterprises need to send design drawings to overseas customers for confirmation or production. The translated DWG files can be edited directly, making it convenient to quickly modify annotations and dimensions after customer feedback.
• Overseas engineering project bidding: The bidding team needs to quickly translate a large number of DWG drawings (architectural, mechanical and electrical, structural, etc.) in a short period. Zisanjiao's web platform translates on upload instantly and processes in parallel in batches, with no plugin installation required, greatly improving drawing output efficiency.
• Joint Chinese-foreign design drawing review: When a design institute conducts joint drawing review with overseas owners/consultants, use the "bilingual output mode": foreign parties view the original text and Chinese parties view the translation, handling communication between both sides with one drawing and reducing repeated drawing output.
• Cross-disciplinary drawing translation for design institutes in multiple industries: Large design institutes are simultaneously involved in multiple disciplines such as architecture, machinery, chemicals, electronics, and municipal engineering. Zisanjiao's all-industry terminology database covers them, so different disciplines can be switched on one platform for precise translation.
• Translation iteration during the drawing detailed design stage: After winning an overseas project, it enters the detailed design stage, and drawings need repeated modification and adjustment. The editable DWG files output by Zisanjiao allow engineers to directly modify annotations, adjust dimensions, and carry out detailing on them, without the need to retranslate.