The DQC Privacy Policy was updated on Febuary 1st, 2023.

We understand the importance of privacy to our customers and visitors to DQC website. For many years, our policy has been to treat what we learn about our customers as confidential.
For example, we will not give or sell confidential or Personal Information about our customer to any third party not affiliated with their transaction, except as required by law or as necessary to provide DQC services to the customer.

Users can visit most areas of the DQC websites without revealing who they are or providing any information about themselves. However, some of restricted pages on the website require that users identify themselves in order to avoid the restricted information being illegally copied. In these situations, we may ask users to provide some Personal Information.

Your continued use of this site signifies your assent to DQC Privacy Policy. We reserve the right, at our discretion, to modify, add, or remove portions of this policy at any time by posting the revised policy at DQC websites.

If you need any further assistance, please send an email with your questions or comment to

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