Accepted File Formats
Provide usable 2D drawings, 3D models, and supporting documents for faster engineering review. Guanjie Technology supports international buyers who need practical engineering communication, coordinated manufacturing, and a clear route from RFQ to repeat production.
Engineering Support Before Production
Successful custom manufacturing starts before a machine runs. A usable production package must connect product function with material behavior, process capability, assembly needs, inspection, finishing, packaging, and logistics. Guanjie's engineering workflow is intended to make those connections visible early.
For international sourcing teams, early clarification is especially valuable. A minor ambiguity in a drawing can become a quotation difference, a production delay, or a disagreement at inspection. The review therefore focuses on STEP and STP models, IGES files, DXF and DWG drawings, PDF specifications, and revision identification. The objective is not to change the product without approval. It is to explain where the design and manufacturing plan need to meet.
What the Review Is Designed to Achieve
- Faster file review
- Fewer interpretation questions
- More accurate scope definition
These outcomes depend on accurate files and timely answers from both sides. Where a requirement is not defined, Guanjie can identify the decision needed and may suggest an option for evaluation. Recommendations must be approved before they become production requirements.
A Practical Review Workflow
1. Confirm the Project Package
The first step is to identify the latest revision and confirm which files control production. A 3D model can communicate geometry, while a 2D drawing usually carries tolerances, finishes, notes, threads, weld symbols, and inspection requirements. Purchase specifications and reference samples should be linked to the same revision.
2. Understand Function and Risk
Not every dimension has equal importance. Buyers should identify interfaces, sealing surfaces, cosmetic areas, safety-related features, alignment points, and dimensions that affect downstream assembly. This allows engineering attention to be directed toward the features that matter most.
3. Match Geometry to Process
The proposed manufacturing route is reviewed against part geometry and quantity. Laser cutting, bending, machining, welding, hardware insertion, grinding, and finishing each introduce different design constraints. A feature that is simple in one process may be inefficient or unstable in another.
4. Review Material and Finish
Material grade, thickness, temper, surface condition, grain direction, and finish can influence forming, welding, appearance, corrosion performance, and availability. The specification should distinguish mandatory requirements from acceptable alternatives.
5. Define Verification
Critical dimensions and functional characteristics need a practical inspection method. The drawing should avoid demanding precision that cannot be meaningfully measured or that does not improve product performance. Any report format, sampling level, or special gauge requirement should be discussed before quotation.
Core Accepted File Formats Considerations
STEP and STP models
STEP and STP models should be treated as part of the production definition rather than a late-stage correction. During review, Guanjie considers how this requirement affects process choice, setup, inspection, and repeatability. Buyers receive the clearest response when they explain the functional reason behind unusual or critical requirements.
For customers in the USA, Europe, Australia, and the Middle East, documentation also reduces the risk created by distance and time-zone differences. Decisions should be recorded against the relevant drawing revision so purchasing, engineering, production, and quality teams are working from the same information.
IGES files
IGES files should be treated as part of the production definition rather than a late-stage correction. During review, Guanjie considers how this requirement affects process choice, setup, inspection, and repeatability. Buyers receive the clearest response when they explain the functional reason behind unusual or critical requirements.
For customers in the USA, Europe, Australia, and the Middle East, documentation also reduces the risk created by distance and time-zone differences. Decisions should be recorded against the relevant drawing revision so purchasing, engineering, production, and quality teams are working from the same information.
DXF and DWG drawings
DXF and DWG drawings should be treated as part of the production definition rather than a late-stage correction. During review, Guanjie considers how this requirement affects process choice, setup, inspection, and repeatability. Buyers receive the clearest response when they explain the functional reason behind unusual or critical requirements.
For customers in the USA, Europe, Australia, and the Middle East, documentation also reduces the risk created by distance and time-zone differences. Decisions should be recorded against the relevant drawing revision so purchasing, engineering, production, and quality teams are working from the same information.
PDF specifications
PDF specifications should be treated as part of the production definition rather than a late-stage correction. During review, Guanjie considers how this requirement affects process choice, setup, inspection, and repeatability. Buyers receive the clearest response when they explain the functional reason behind unusual or critical requirements.
For customers in the USA, Europe, Australia, and the Middle East, documentation also reduces the risk created by distance and time-zone differences. Decisions should be recorded against the relevant drawing revision so purchasing, engineering, production, and quality teams are working from the same information.
Revision identification
Revision identification should be treated as part of the production definition rather than a late-stage correction. During review, Guanjie considers how this requirement affects process choice, setup, inspection, and repeatability. Buyers receive the clearest response when they explain the functional reason behind unusual or critical requirements.
For customers in the USA, Europe, Australia, and the Middle East, documentation also reduces the risk created by distance and time-zone differences. Decisions should be recorded against the relevant drawing revision so purchasing, engineering, production, and quality teams are working from the same information.
Information to Include in Your RFQ
- Latest 2D drawings and available 3D models
- Material grade, thickness, and approved alternatives
- Surface finish, color, texture, and cosmetic requirements
- Prototype quantity, order quantity, and expected annual demand
- Critical dimensions and inspection documentation
- Assembly, packaging, labeling, and shipping requirements
- Target schedule and delivery destination
Avoid sending files without revision identifiers or relying on email comments to replace drawing requirements. If a reference sample conflicts with a drawing, specify which source controls acceptance.
Related Resources
Manufacturing Capabilities
Review the fabrication, machining, forming, welding, and enclosure services available for custom projects.
Material / Finishing Library
Compare material and surface options before finalizing the production specification.
Tolerance Capability Chart
Understand why tolerances must be reviewed by process, geometry, and application.
Quality Control
See how requirements move from drawings into incoming, in-process, and final inspection.
Frequently Asked Questions
What information should I include with my inquiry?
Send the latest drawing or 3D model, material and finish requirements, expected quantities, target delivery timing, application notes, inspection requirements, and the destination country. If some information is not yet fixed, identify it as open for engineering recommendation.
Can Guanjie review a project before formal production?
Yes. The review can identify missing dimensions, unclear specifications, process conflicts, and questions that affect quotation or production planning. Final feasibility remains subject to the complete files and confirmed requirements.
Do you support international projects?
Guanjie is positioned to support customers in the USA, Europe, Australia, and the Middle East. Project communication should confirm technical requirements, commercial terms, documentation, packaging, and shipping responsibilities before an order is released.
Can you support prototypes and repeat production?
Project suitability depends on the process, tooling, material, and quantity. Share both the immediate requirement and expected future demand so the manufacturing route can consider validation needs as well as repeat-order efficiency.
How are quality requirements confirmed?
Quality requirements should be documented in the drawing, specification, purchase order, or agreed inspection plan. Critical features, sampling expectations, reports, and any special documentation must be confirmed before production.
How do I request a quotation?
Use the Contact / RFQ page and upload the available files. A complete RFQ helps the team review manufacturability, clarify assumptions, and prepare an appropriate commercial response.
Have a Design or Engineering Question?
Send Guanjie Technology your drawings, specifications, expected quantity, and delivery destination. The team will review the available information, identify questions that affect manufacturing, and help define the next practical step.