Effective date: August 25, 2026. This policy explains how we collect, use and protect your information when you visit this website or use our services. Please read it carefully.
This privacy policy explains how CongDai collects, uses and protects information when you visit our website at www.congdai.mom or use any of our computer systems design and integration services. The services described in this policy are developed and operated by the developer CongDai. CongDai is the brand name used by Handan Cong Dai Trading Co., Ltd., a company that operates in the field of computer systems design and related services, professional, scientific and technical services, and computer integrated systems design.
We respect your privacy and we are committed to handling your information with care, honesty and transparency. We want you to understand what information we collect, why we collect it and how you can control it. We have written this policy in plain English so that you can make informed decisions about your personal data without needing a lawyer to translate the text for you.
Please read this policy carefully before you use our website or engage our services. If you do not agree with any part of this policy, please do not use the website and do not submit any personal information to us. By using the website or by contacting us, you acknowledge that you have read and understood the practices described in this document.
This policy applies to information collected through the website, through email and telephone contact, and through the delivery of our professional services. It covers the website at www.congdai.mom, any subpages of that address, and any correspondence that takes place between you and our team through the contact channels listed on this website.
This policy also covers information that we receive from clients about their own customers, staff or suppliers when such information is needed to design, build, test or operate a computer system on behalf of that client. When we process information on behalf of a client, that client remains the controller of the information for the purposes of applicable data protection law, and we act as a processor under their written instructions.
This policy does not cover the practices of third party websites that may be linked from our pages, and it does not cover information that is collected by other companies when you use their independent tools. You should review the privacy policies of any third party service before you provide personal information to it.
The website, the services and all tools described in this policy are developed and operated by CongDai. CongDai is the trading name of Handan Cong Dai Trading Co., Ltd., a company registered and operating in China. The developer CongDai is responsible for the design, development, hosting and day to day operation of the services described on this website.
Our registered business address is No. 10, Lane 1, Chaliu Street, Zhennanpo Village, Hesha Town, Hanshan District, Handan - 056000, China (CN). This is also the address that should be used for any formal correspondence relating to privacy or data protection matters. The postal code for this address is 056000.
If you have any question about this policy, about the way your information is handled, or about the identity of the developer, you may contact us at any time by emailing guide@congdai.mom or by calling +19407542236. We will respond to your message as quickly as we reasonably can.
We collect two broad categories of information. The first category is information that you provide to us directly, such as your name, your email address, your telephone number and the content of any message you send to us. The second category is information that is collected automatically when you visit the website, such as technical logs, browser type, device type, pages viewed and the general region from which you connect.
We collect only the information that is reasonably needed to provide our services, to answer your questions, to keep the website secure and to meet our legal obligations. We do not collect information for its own sake, we do not collect more data than we need, and we never buy personal data from other companies or data brokers.
When you become a client, we may collect additional information that is necessary for the performance of our contract, including billing details, project specifications, system documentation and, where required, information about the end users of a system we are engaged to design. All such information is treated as confidential.
When you contact us through the website contact form, by email or by telephone, you provide information such as your name, your contact details and the details of your inquiry. This information is used to respond to your message, to understand your needs and to decide whether our services are a good fit for your situation.
When you become a client, we may collect additional business information, including your company name, your billing address, your tax information and the technical details of the systems you ask us to design or operate. We may also collect the names and roles of the people within your organization who will work with our team.
When we provide computer integrated systems design services, we may need to process information about your customers, your staff or your partners to the extent required for the system to work correctly. We treat all such information as confidential, we use it only for the purpose for which it was provided, and we limit access to the people who genuinely need it.
Like most websites, we automatically receive and record certain technical information when you visit our pages. This information includes your Internet Protocol address, the type of browser you use, the type of device you use, the pages you visit, the date and time of each visit, the amount of time you spend on each page and the referring website, if any.
We use this technical information to understand how the website is used, to detect and prevent abuse, to keep the site secure and to improve the performance and reliability of our pages. For example, if a particular page is slow for many visitors, the technical logs help us find and fix the cause.
This technical information is kept in aggregated form wherever possible, and we do not attempt to identify individual visitors from it. The logs are retained for a limited period and are accessible only to the small number of staff who are responsible for the operation and security of the website.
We use the information we collect for clear and limited purposes. We use contact details to reply to your messages, to schedule meetings, to send you quotations and to provide the services you request. We use business and technical information to design, build, test, document and operate the computer systems we are engaged to deliver.
We use automatic technical data to maintain the security of the website, to diagnose faults and to improve its performance and user experience. We use aggregated data to understand which of our services are most useful and to plan our work.
We may use your email address to send you service updates, notices about changes to this policy or messages that are directly relevant to an active engagement. We do not use your information for unrelated marketing, and we will never share your contact details with third parties for their own marketing purposes. If you ask us to stop contacting you, we will stop.
Depending on your location and on the nature of our relationship, we rely on one or more legal bases for processing your information. We process information with your consent when you provide it to us voluntarily and when consent is required by law. You may withdraw your consent at any time by contacting us, and we will stop the relevant processing without affecting the lawfulness of anything we did before you withdrew.
We process information when it is necessary for the performance of a contract with you, for example when we deliver a design, a build or an operating service that you have commissioned from us. We also process information when it is necessary to take steps at your request before entering into a contract, such as when you ask for a quotation.
We also process information when it is necessary for our legitimate interests, such as securing our website, preventing fraud, maintaining records and improving our services, provided that your rights and interests are not overridden by those interests. Where a legal obligation requires us to keep or disclose information, we will comply with that obligation.
We work with a small number of trusted service providers to host the website, to handle email, to provide communication tools and to support our internal operations. These providers receive only the information that is necessary for the specific service they perform, and they are bound by written agreements that require them to protect the information and to use it only on our instructions.
We review our service providers on a regular basis, and we do not engage providers that cannot demonstrate adequate security and privacy practices. Where a provider is located outside China, we take additional steps to ensure that your information is protected to a standard equivalent to the protections described in this policy.
We remain responsible for the handling of your information even when a service provider is involved in the processing. If a provider fails to meet the required standard, we will act to correct the situation, and we will take reasonable steps to notify you if your information is affected by any incident.
Our company is based in China, and the services we provide are developed and operated from our offices in Handan. When you visit the website or use our services, your information may be processed in China and in other countries where our service providers operate.
We take reasonable steps to ensure that your information is protected with an adequate level of security regardless of where it is processed. Where an international transfer of personal information takes place, we rely on appropriate safeguards, such as standard contractual clauses or equivalent measures that are recognized under applicable data protection law.
If you are located outside China, you should be aware that the data protection laws of your country may differ from those of China. By using the website or by engaging our services, you understand that your information may be transferred and processed as described in this policy.
We keep your information only for as long as it is needed for the purposes described in this policy. Contact and inquiry information is kept for as long as we are responding to your request and for a reasonable period afterwards for record keeping and for the resolution of any follow up questions.
Business records related to an active project are kept for the duration of the engagement and for the period required by applicable law or by our own retention schedule. This allows us to support the systems we have delivered, to maintain accurate accounting records and to answer any questions that may arise after the project is complete.
When information is no longer needed for any permitted purpose, we delete it or make it anonymous in a secure manner. The exact retention periods depend on the nature of the information and on the legal obligations that apply to us at the time.
We apply reasonable technical and organizational measures to protect your information against loss, misuse and unauthorized access. These measures include restricted access to systems, encrypted transmission where appropriate, regular backups, careful management of passwords and access rights, and ongoing training for our staff on secure data handling.
We review our security practices on a regular basis, and we take immediate action when a weakness is identified. Access to the information we hold is limited to the people who need it to do their work, and every member of our team understands the importance of keeping that information confidential.
No method of transmission over the internet is completely secure, so we cannot guarantee absolute security. In the unlikely event of a security incident that affects your personal information, we will notify you and the relevant authorities as required by law, and we will do everything reasonable to limit the impact.
Our services and this website are not directed at children, and we do not knowingly collect personal information from children. We define a child as a person under the age of 16, or under the age of consent in the jurisdiction where the child resides, whichever is higher.
If you believe that we have received information about a child by accident, please contact us at guide@congdai.mom as soon as possible, and we will delete the information promptly and confirm that the deletion has taken place.
We encourage parents and guardians to supervise the online activity of children and to teach them never to share personal information without permission. If a child has provided us with information, we ask a parent or guardian to contact us so that we can remove it.
You have rights regarding the personal information we hold about you, subject to applicable law. You may ask us to access, correct or delete your information, and you may ask us to limit or stop certain processing of your information. You may also ask for a copy of the information you provided to us in a structured, machine-readable format, where that is technically possible.
To exercise any of these rights, send a message to guide@congdai.mom describing your request and the information it concerns. We will respond within the time period required by law, which is usually within 30 days. We may need to verify your identity before we act on a request, and we will ask only for the information that is necessary for that verification.
We will not charge you a fee for making a reasonable request, and we will never treat you differently because you have asked to exercise your rights. If a request is manifestly unfounded or excessive, we may refuse to act on it, but we will explain our reasoning and point you to the options available to you.
We send emails only for purposes that are directly relevant to our services. This includes replies to your inquiries, updates about an active project, notices about changes to the website or to this policy, and occasional news about our practice that we believe may be of genuine interest to you.
We do not send spam, and we never add people to a mailing list without their consent. Every message we send is relevant, and we keep the volume low so that our communications remain useful rather than noisy.
If you receive a message from us and you no longer wish to hear from us, reply with a simple request to be removed, and we will honor it without delay. You may also choose not to provide your email address at all when you contact us by telephone or through other channels.
Our website may contain links to third party websites, tools or resources that are not operated by us. These links are provided for your convenience, and they are outside the control of our company. This policy applies only to our own website and services.
Once you leave our website by following a link, the privacy practices of the destination site apply to any information you provide there. We encourage you to read the privacy policy of any site before you use it, and to think carefully before you share personal information with any third party.
We are not responsible for the content, the security or the privacy practices of third party websites, and we make no promises about how they handle your information. Please check the policies of any site before you provide personal information to it.
We may update this privacy policy from time to time to reflect changes in our services, in technology or in applicable law. When we make a material change, we will post the updated policy on this page and update the effective date at the top of the document so that you can always tell which version is current.
If a change affects your rights in a significant way, we will take reasonable steps to notify you, for example by email if we have your address. We will not make changes that reduce your rights without giving you clear notice and an opportunity to object.
We encourage you to review this page periodically so that you remain informed about how we protect your information. Your continued use of the website after a change to this policy means that you accept the updated policy, as permitted by law.
If you have questions, concerns or complaints about this privacy policy or about the way we handle your information, please contact us. We are always happy to explain our practices in plain language and to resolve any concern you raise.
You may write to us at Handan Cong Dai Trading Co., Ltd., No. 10, Lane 1, Chaliu Street, Zhennanpo Village, Hesha Town, Hanshan District, Handan - 056000, China (CN). You may also email us at guide@congdai.mom or call us at +19407542236.
We will respond to your message as quickly as we can, and we will do our best to resolve any concern you raise. If you are not satisfied with our response, you may also have the right to lodge a complaint with your local data protection authority, and we will provide you with the information you need to do so.