In order to truly realize the tenet of "serving users, being responsible to users, and satisfying users", Cnairvent Energy Saving and Environmental Protection makes the following commitments to users for product quality and service:

1. Our company guarantees that all aspects of production will be carried out in strict accordance with the company's system, whether in product design, manufacturing, product inspection process will be in close contact with users and owners, feedback related information, and welcome users and owners to visit our company at any time to guide.

2. The equipment and products supporting key projects shall be guaranteed to be delivered in accordance with the requirements of the contract. For technical services that need technical services, technical service personnel will be sent to participate in the unbox acceptance and guide the installation and debugging work until the equipment runs normally.

3. Ensure that users are provided with excellent pre-sales, in-sales and after-sales services, comprehensively introduce the performance and use methods of the product to users before sales, and provide relevant information. There is an obligation to invite the demander to participate in the supplier's technical design review when needed.

4. Organize business training on equipment installation, debugging, use and maintenance technology for the demander according to user needs. Carry out quality tracking and user access to key users, and continuously improve product performance and product quality according to user needs in a timely manner.

5. The 12-month operation of the equipment (product) is the warranty period. Cnairvent Energy Saving and Environmental Protection shall be responsible for the quality problems arising during the warranty period, and the product shall be subject to the "three guarantees" (including repair, replacement, return).

6. For products that exceed the "3R" period, ensure that maintenance accessories are provided and service should be done according to user needs. Accessories and perishable parts of the product are available at a factory price discount.

7. After receiving the quality problem information reported by the user, reply or send service personnel within 2 hours to arrive at the site as soon as possible, so that the user is not satisfied and the service will not stop