In order to ensure the fairness of our company's testing work, using scientific methods to provide accurate and reliable testing results, we hereby declare as follows:

1. Our company holds a fair attitude towards any inspected unit, maintains the same work quality, and is not subject to any interference or economic temptation during testing, ensuring the independence and honesty of testing work and the fairness of testing conclusions.

2. Strictly implement relevant national laws, regulations, and technical standards, select advanced testing equipment, and ensure the scientific nature of testing methods and the accuracy of testing data.

3. Strictly abide by all contracts or agreements signed with customers, strengthen employees' professional ethics and technical and business qualities, and encourage employees to actively strive and work hard.

4. In addition to undertaking customer testing tasks, our company shall not use customer technical materials and information for any technology, development, consulting, service, trade or other activities that violate fairness.

5. Never participate in any activities that damage the company's independence in judgment and integrity in testing.

Guangzhou STL Testing Technology Co., LTD.

January 5, 2017