Legal & data protection

Your designs stay yours.

This policy explains how we handle personal information and the manufacturing data entrusted to us—from a first inquiry and CAD review through production, inspection, delivery, and support.

OUR CORE COMMITMENT

Confidential by default.

Customer files are used only for legitimate project and service purposes. Access is limited to people and approved partners who need the information to perform their work.

01 / Overview

Privacy built around manufacturing work.

Prolean MFG (Shenzhen) Co., Ltd. ("ProleanMFG," "we," "us," or "our") provides custom manufacturing, engineering review, quoting, production, inspection, and related services. This policy applies when you use our website, request a quote, contact our team, place an order, visit our facilities, or otherwise interact with us.

This policy covers personal information about identifiable people and Customer Technical Data connected to a quote or manufacturing project. Customer Technical Data is commercially sensitive project information and may not always be personal information; we protect it under the project-confidentiality commitments described here and any applicable contract or NDA.

Purpose limited

We use information for the reason it was provided and compatible business purposes described in this policy.

Need to know

Project access is limited to assigned personnel and approved service or manufacturing partners.

Customer controlled

You retain rights in customer-provided drawings, models, specifications, and other project content.

Who is responsible?

For website, sales, account, and order data described in this policy, the responsible entity is Prolean MFG (Shenzhen) Co., Ltd., Room 101, Building B, No. 15 Lingxia Road, Bao’an District, Shenzhen 518103, P.R. China. A contract, order, or local notice may identify an additional Prolean entity for a specific transaction.

02 / Information we collect

Information connected to your account, project, and visit.

We collect information you provide directly, information generated while we deliver manufacturing services, and limited technical information produced when you use our website.

CONTACT & ACCOUNT

Who you are

Name, work email, phone number, company, job title, account credentials, preferred language, and communication preferences.

QUOTE & ORDER

What you request

RFQ details, quantities, materials, finishes, target dates, pricing, purchase orders, billing and shipping details, tax or customs information, and transaction history.

TECHNICAL DATA

What we manufacture

CAD models, 2D drawings, specifications, tolerances, BOMs, reference images, part metadata, DFM discussions, revision history, and special instructions.

PRODUCTION & QUALITY

How the work progresses

Work orders, material and lot records, machine or process records, inspection results, certificates, nonconformance records, packaging, logistics, and support history.

COMMUNICATIONS

What we discuss

Email, form, telephone, chat, meeting, survey, event, customer-support, and complaint records, including attachments you choose to provide.

WEBSITE & DEVICE

How the site is used

IP address, browser and device type, referring page, pages viewed, session events, approximate location, cookie identifiers, and security logs.

Please avoid placing unnecessary personal information in CAD files, drawings, file names, title blocks, or free-text notes. If you provide information about another person, you must have authority to do so and give any notice required by law.

03 / Customer drawings & technical data

Your CAD is project data—not marketing material.

Customer Technical Data may include 2D drawings, 3D CAD models, specifications, tolerances, bills of materials, reference images, inspection requirements, DFM comments, prototypes, tooling data, and other information needed to quote or manufacture your parts.

You retain ownership.

You give us a limited, non-exclusive permission to access, copy, convert, analyze, annotate, and share the data only as needed to review, quote, manufacture, inspect, deliver, and support your project, comply with law, and protect the service.

Permitted project use

DFM review, pricing, process planning, facility assignment, programming, production, quality, packaging, delivery, and project support.

No unrelated commercialization

We do not sell, license, publish, exhibit, or use your confidential design to manufacture products for another customer.

No unapproved publicity

We do not identify you, show your parts, or use project images in a case study, portfolio, social post, or advertisement without written permission.

Controlled automation

Automated tools may parse files for quoting, geometry, manufacturability, security, or compliance checks. We do not use confidential Customer Technical Data to train public or shared AI models.

Our pre-existing manufacturing methods, software, toolpaths, general know-how, and process improvements remain ours unless a contract says otherwise. This does not transfer ownership of your part design to us. Ownership of project-specific deliverables or design modifications is governed by the applicable quote, order terms, or NDA.

04 / How we use information

Use follows the project lifecycle.

Inquiry

Route and respond

Quote

Review and price

Production

Plan and make

Quality

Inspect and trace

Delivery

Ship and support

Provide the requested service: create and manage accounts; respond to questions; prepare quotes; review manufacturability; produce, inspect, ship, invoice, and support parts.
Run and improve operations: maintain project history, quality traceability, capacity planning, customer support, internal reporting, and service reliability using proportionate information.
Protect people and systems: authenticate users, detect fraud or malicious files, monitor security, enforce agreements, investigate incidents, and defend legal claims.
Meet legal obligations: accounting, tax, customs, sanctions, export-control, product-safety, regulatory, audit, and lawful government requirements.
Communicate: send transactional updates and, where allowed, relevant marketing. You can opt out of marketing at any time; operational messages may still be necessary.

We do not use solely automated decision-making that produces legal or similarly significant effects about an individual unless we provide the notice and safeguards required by applicable law.

05 / Production confidentiality

Protection continues beyond file upload.

Confidentiality applies across engineering review, supplier selection, production planning, machining or fabrication, outside processing, inspection, packaging, logistics, and after-sales support.

Stage	How access is limited
Engineering & quoting	Assigned personnel receive the information needed to assess geometry, material, tolerance, process, quality, schedule, and price.
Facility or partner assignment	Technical data is provided only to approved parties considered for or assigned to the work. Customer identity and unrelated commercial details are removed where practical.
Shop-floor execution	Work instructions expose only the detail needed for programming, setup, manufacturing, finishing, inspection, or packing. Unauthorized copying, photography, disclosure, and personal-device storage are prohibited.
Outside processing	Heat treatment, coating, testing, logistics, and other providers receive only the information required for their task and are subject to contractual or professional confidentiality duties.
Parts, samples & scrap	Customer parts, fixtures, prototypes, excess pieces, and design-bearing scrap are controlled as project property and returned, retained, or disposed of according to the order, our procedures, and applicable law.
Quality & traceability	Inspection, material, nonconformance, and delivery records are linked to the project and kept accessible only to authorized teams and service providers.

An NDA can be arranged before file sharing.

A signed NDA or specific order term may add project-specific controls. If there is a conflict, the more specific signed agreement governs the confidential project information it covers.

06 / How we share information

Shared for delivery—not broadcast for bidding.

We do not sell Customer Technical Data. We disclose information only when there is a legitimate need and apply confidentiality, security, and data-protection requirements appropriate to the information and relationship.

Within ProleanMFG

Employees, affiliates, and contractors who need information for sales, engineering, production, quality, finance, IT, legal, or support.

Manufacturing partners

Approved facilities and outside processors considered for or assigned to your project, subject to confidentiality and use limitations.

Service providers

Cloud hosting, file storage, security, communications, analytics, CRM, payment, customs, and logistics providers performing services for us.

Professional advisers

Auditors, insurers, banks, legal advisers, certification bodies, and other advisers under professional or contractual duties.

Legal and safety needs

Authorities or other parties when required by law or reasonably necessary to protect rights, safety, systems, prevent fraud, or respond to a valid legal process.

Business transactions

A buyer, investor, or successor in a merger, financing, reorganization, or sale, subject to appropriate confidentiality and continued legal protection.

When legally permitted, we will take reasonable steps to notify the affected customer before a compelled disclosure of confidential project information so the customer may seek protective measures.

07 / Security safeguards

Layered controls for digital and physical work.

We use administrative, technical, and physical safeguards designed for the sensitivity of the information, the project, and the system. These include controlled access, confidentiality obligations, secure transmission and storage controls, account and privilege management, logging, backup and recovery, supplier controls, personnel training, and incident-response procedures.

Access control

Role and project need

Data protection

In transit and at rest

Activity records

Trace and investigate

No system is completely risk free.

Please use our designated upload or contact channels, protect your credentials, keep your own current backup, and tell us promptly if you suspect unauthorized access. Do not send highly restricted data until we confirm an approved route.

08 / Retention & deletion

Kept only for a defined business or legal need.

We retain information for the period reasonably necessary to provide services, maintain project and quality history, meet contractual, warranty, tax, customs, accounting, certification, export-control, or other legal obligations, resolve disputes, secure our systems, and enforce agreements.

Record type	Retention approach
Quotes and inquiries	For follow-up, revision, fraud prevention, and reasonable business-record needs; then deleted or de-identified when no longer required.
Orders and manufacturing records	For fulfillment, repeat orders, traceability, quality, warranty, audit, tax, and legal requirements.
Account information	While the account is active and afterward only as needed for legitimate records, security, or legal obligations.
Marketing information	Until you opt out or the information is no longer useful, subject to suppression records needed to respect the opt-out.
Backups and restricted archives	Removed through normal backup cycles or isolated from ordinary use until deletion is technically feasible.

A deletion request may not result in immediate or complete removal when we must retain information for an active order, quality traceability, a signed agreement, security, a dispute, or law. We will explain applicable limits when required.

09 / Cookies & marketing

Choice before non-essential measurement.

ProleanMFG uses cookies, tags, pixels, and similar technologies to operate and secure the website, remember choices, understand performance, and—only where enabled and permitted—measure advertising. The controls displayed on the website are intended to let you accept, deny, or save choices for non-essential categories.

ALWAYS ACTIVE

Functional

Required for core site functions, security, forms, and consent preferences.

YOUR CHOICE

Statistics

Helps us understand visits, performance, and how pages are used.

YOUR CHOICE

Marketing

Measures campaigns and advertising interactions where permitted.

Technology / provider	Purpose and category	Current disclosure
Complianz	Consent management · Functional	Stores your consent choice. The current configuration retains the choice for up to 365 days and recognizes browser Do Not Track.
Google Analytics 4 & Google Tag Manager	Audience and website measurement · Statistics; tags may also support Marketing	May process page, device, referral, engagement, and event data. Non-essential measurement should run only after the applicable choice where consent is required.
Microsoft Clarity	Interaction and performance diagnostics · Statistics	May process clicks, scrolling, page interaction, device, and diagnostic data to help identify usability issues.
Google Ads / DoubleClick	Conversion and campaign measurement · Marketing	May process advertising interaction, conversion, device, and identifier data. It should remain disabled until the applicable choice where required.
Google reCAPTCHA	Form abuse and fraud protection · Functional / security	May process device, network, and interaction signals needed to distinguish legitimate users from automated abuse.

Scope of this inventory

The services above were observed in the live website code during a point-in-time review on September 3, 2026. Providers, cookie names, exact lifetimes, and behavior can change. The production cookie declaration must be generated from a clean-session scan and kept current.

Manage or withdraw consent. Reopen “Cookie Settings” on the production website at any time. Withdrawing consent does not make earlier lawful processing unlawful.
Browser controls. You can delete or block cookies through your browser. Blocking functional technologies may prevent forms or other website features from working.
Marketing communications. Marketing emails include an unsubscribe method. Opting out does not stop required quote, order, security, or policy communications.
Sale, sharing, and targeted advertising. We do not sell Customer Technical Data or personal information for money. Where applicable law treats advertising disclosures as a “sale,” “sharing,” or targeted advertising, we will provide the required choice.

IMPLEMENTATION REVIEW

Consent blocking and policy links require correction before publication.

During the September 3 review, Google Analytics, Google Tag Manager, Microsoft Clarity, Google Ads/DoubleClick, and reCAPTCHA code was present while the initial consent panel was still open and Statistics and Marketing were shown as unselected. This observation does not by itself prove that every optional cookie was stored or every measurement event was sent, but it requires a clean-session network test and remediation if any non-essential processing occurs before consent. The consent tool’s configured privacy and cookie-policy links also routed to an unrelated CNC tolerance article and must be replaced with the correct policy URLs.

Third-party services process information under their own privacy terms. Where ProleanMFG determines their use, we remain responsible for selecting an appropriate provider, configuring it consistently with the stated choice, and providing required information and rights.

10 / Legal bases

Why processing is lawful.

Where laws such as the EU or UK GDPR require a legal basis, we rely on one or more of the following:

CONTRACT

To take steps at your request, provide a quote, fulfill an order, manage payment, and deliver support.

LEGITIMATE INTERESTS

To operate and improve a secure manufacturing business, manage relationships, prevent fraud, protect rights, and send relevant business communications where those interests are not overridden by your rights.

LEGAL OBLIGATION

To meet tax, accounting, customs, sanctions, export-control, regulatory, safety, and lawful disclosure requirements.

CONSENT

Where required for non-essential cookies, optional marketing, or another use explained when consent is requested. You may withdraw consent prospectively.

11 / International transfers

Manufacturing can cross borders. Protection must travel with the data.

ProleanMFG operates from China and serves customers internationally. Information may be processed in China and in other countries where our customers, affiliates, cloud or communication providers, manufacturing partners, outside processors, logistics providers, or advisers operate.

Where a cross-border transfer requires safeguards, we use a lawful transfer mechanism appropriate to the relationship and jurisdiction, which may include adequacy decisions, approved contractual clauses, data-transfer agreements, consent where valid, or another legally recognized mechanism. Local laws may differ from those in your country.

12 / Your privacy rights

Choices depend on where you live.

Subject to applicable law and exceptions, you may have the right to request access to or a copy of personal information, correction, deletion, restriction, objection, portability, withdrawal of consent, or information about how data is used and disclosed. You may also have a right to appeal a decision or complain to a data-protection authority.

To protect you and other customers, we may verify your identity and authority before responding. An authorized agent may submit a request where the law allows. We will not discriminate against you for exercising a privacy right. Rights generally apply to personal information; deletion or access to confidential project data may also be governed by your contract, NDA, or order requirements.

13 / Nda & restricted data

Some files require a conversation before upload.

STOP BEFORE UPLOAD

Do not submit controlled or unusually sensitive data through the standard quote flow unless we have confirmed that the project and transfer are permitted.

This can include ITAR- or EAR-controlled technical data, CUI or military technical data, nuclear or defense information, government-classified data, regulated health data, credentials, personal financial information, or another category subject to special localization, licensing, security, or handling requirements.

You are responsible for having the rights and authorizations needed to provide project data and for identifying applicable export, sanctions, intellectual-property, secrecy, or industry restrictions. We may refuse, quarantine, return, or delete files that we cannot lawfully or securely process.

14 / Other important information

Incidents, children, links, and policy changes.

What is Alodine coating?

Security incidents: We maintain procedures to investigate suspected unauthorized access, use, or disclosure. Where law or a signed agreement requires notification, we will notify affected customers, individuals, or authorities within the required timeframe and provide reasonably available information.

What is the difference between Class 1A and Class 3?

Children: Our business services are not directed to children, and we do not knowingly collect personal information from children through the website. Contact us if you believe a child has provided information to us.

Does Alodine change part dimensions?

Third-party links and services: Websites, platforms, payment tools, or services operated by another organization have their own privacy notices. This policy does not control their independent practices.

What information is required for a quote?

Changes to this policy: We may update this policy when our services, systems, legal requirements, or data practices change. We will post the updated version and effective date here and provide additional notice when required by law or when a change is material.

15 / Contact

Ask before you share sensitive files.

For a privacy request, data-protection question, complaint, NDA, or restricted-data project check, contact us using the details below. No drawing is required to begin the conversation.

EMAIL

quotes@proleantech.com — Use subject: Privacy Request or NDA Request

PHONE

+86 199 2669 6972 — Ask for the team handling privacy or confidentiality

ADDRESS

Room 101, Building B, No. 15 Lingxia Road, Bao’an District, Shenzhen 518103, P.R. China

Need an NDA before sharing files?

Start a confidential consultation. Our team can discuss the project and the appropriate sharing route before you upload Customer Technical Data.