How to Confirm Requirements When a Customer Sends Drawings and Technical Requirements

In equipment exports, component procurement, and custom manufacturing, customers often send drawings, technical specification sheets, and reference photos to ask whether production is possible, what the price is, and how long delivery will take.

After receiving these documents, sales staff should first check whether the files are complete and the requirements are clear before passing them to technical staff or the factory for assessment. Even drawings that appear detailed may lack information on materials, dimensional tolerances, interfaces, or acceptance criteria.

The goal of confirming requirements is to establish a shared understanding of the product and scope of supply among the customer, sales staff, and manufacturer, and to retain the results as traceable written records.

One: Organize the Files and Check Whether the Documents Are Complete

First, organize the email body, drawings, specification sheets, photos, and previous communications under the same project and create a file list.

Key points to check:

• Whether attachments can be opened properly and their contents are clear.

• Whether all drawing pages are present and whether any schedules or supplementary drawings are missing.

• Whether the product name, drawing number, revision, and date can be identified.

• Whether the units used in the drawings are clearly specified.

• Whether the technical requirements refer to documents that have not yet been provided.

• Whether the customer has specified the purchase quantity and delivery requirements.

For blurry screenshots, partial photos, and files with missing pages, ask the customer to provide clear originals. Critical dimensions needed for quotation and production should be based on clearly marked information confirmed by the customer, rather than independently estimated from image proportions.

Two: Confirm Drawing Revisions and the Purpose of Each File

Customers may send multiple files at different times, but the most recently received file is not necessarily the final production revision.

Confirm the purpose of each document:

If the drawings, emails, and specification sheets differ, list the discrepancies and ask the customer to clarify which requirements apply. Do not independently assume that any particular document takes precedence.

When obtaining final confirmation, record the file name, drawing number, revision, and date for future reference.

Three: Check Dimensions, Materials, and Structural Requirements

This stage should be completed jointly by sales and technical staff. Sales staff are responsible for organizing questions and communicating, while relevant technical staff verify matters requiring professional judgment.

General descriptions such as "metal," "stainless steel," and "galvanized" may not be sufficient for an accurate quotation. Different components may also use different materials, which need to be confirmed individually.

If equivalent materials or alternative components are required, explain the specific differences and obtain the customer's approval before using them.

Four: Confirm Functions and On-Site Operating Conditions

Drawings can show the structure, but may not fully explain how the product works or the environment in which it will be used.

The following information is also needed:

• The product's intended use and operating process.

• The items or materials to be handled, operating capacity, or load-bearing requirements.

• The operating environment and cleaning and maintenance conditions.

• Supporting utilities such as electricity, water, and air supplies.

• Whether connection to existing equipment is required.

• Installation space, entrance dimensions, and operating space.

• Control methods, alarms, and data functions.

Descriptions such as "automated," "large capacity," and "heavy-duty" should be further clarified into specific functions and performance criteria.

When interfaces with existing equipment are involved, check the interface documentation and site conditions rather than assuming a direct connection is possible based on appearance alone.

Five: Clarify the Scope of Supply and Purchase Quantity

The drawings sent by the customer may include an entire system, while the actual purchase covers only part of it.

Confirm whether the supply covers complete equipment, some components, or a single part, and check whether it includes:

• Brackets, fasteners, and connectors.

• Motors, sensors, and control cabinets.

• Piping, cables, and installation materials.

• Spare parts, tools, and manuals.

• Installation, commissioning, and training.

For externally sourced components in the drawings, also clarify who is responsible for procurement, whether specific brands are required, and whether alternative models may be used.

Units must also be clearly stated for quantities. When purchasing by individual machine, set, piece, or linear meter, clarify the corresponding scope. For continuous products, also confirm how they will be divided into sections, the number of joints, and the packaging arrangements.

Six. Ask the technical team or factory to assess feasibility item by item

When submitting the compiled information to the factory, request feedback on each item:

1. Which requirements can be met.

2. Which items require additional information from the customer.

3. Which requirements cannot be met.

4. Whether any adjustments are recommended.

5. How the adjustments would affect price, performance, and lead time.

6. Whether samples, trial production, or testing are required.

A verbal response that "we can manufacture it" should be followed up with confirmation of the specific requirements. Where precision, special processes, or complex functions are involved, verify machining, inspection, and testing capabilities.

After the factory proposes changes, forward them to the customer for confirmation. Without confirmation, the proposed solution should not be treated as the final production requirements.

Seven. Use a question list to obtain customer confirmation

When asking the customer questions, indicate the location each question relates to and explain why it affects product selection, quotation, or production.

The following structure is recommended:

If there are many questions, first focus on confirming matters that affect production feasibility and price, then address the remaining details.

When annotating drawings, retain the original files and save the annotated versions separately to avoid overwriting the customer's original materials.

Eight. Confirm acceptance and testing requirements in advance

Before preparing a quotation, also understand how the customer will determine whether the product meets the requirements.

Clarify the following:

• Which dimensions, functions, and appearance characteristics will be inspected.

• Which measurement or testing methods will be used.

• Which operating conditions will be used for performance testing.

• Whether sample or first-article approval is required.

• Whether factory acceptance or third-party inspection will be arranged.

• Which reports, photos, and videos must be provided.

Arrangements for the materials, site, time, and costs required for testing should also be clarified.

Clear acceptance criteria make it possible to assess the associated costs and reduce disagreements over conformity criteria at delivery.

Nine. Document confirmations in writing and manage subsequent changes

Quotations, orders, and production documents should refer to the same set of confirmed requirements, including drawing revisions, technical specifications, scope of supply, and approved adjustments.

If the customer subsequently changes dimensions, materials, configurations, or quantities, reassess the impact and also confirm:

• Differences between the new and previous requirements.

• Changes to price and lead time.

• How items already purchased or processed will be handled.

• The updated document revisions.

• The production stage from which the changes will take effect.

Once changes are confirmed, promptly notify technical, procurement, production, and inspection personnel, making it clear that the previous documents have been superseded.

Ten. Pre-quotation checklist

If key conditions have not yet been clarified, only a preliminary budget can be provided, and the basis for the quotation, assumptions, and items pending confirmation should be stated.

Customer drawings are an important basis for confirming requirements. By checking versions, filling in missing information, assessing feasibility, and retaining written confirmation, sales personnel can accurately convey customer requirements throughout the quotation, production, and delivery stages.