Here's a rephrased version of the warranty and maintenance terms you've provided:

1.Warranty Coverage:TECS assumes responsibility for any defects arising from the quality of the product during normal operation and will provide complimentary warranty services within the stipulated warranty period..

2.Warranty Period Calculation: The warranty service commences from thedate indicated on the invoice and warranty card provided at the time ofpurchase.In the absence of a valid invoice and warranty card, TEcS willdetermine the warranty period based on the original product's shippingdate, which is identified by the product's serial number (S/N)..

3.Data security: Users are solely responsible for the security and backup oftheir local data, including videos and photographs. Prior to anymaintenance, users must ensure their data is backed up. TEcS is notiable for any data corruption orloss.*

4.Ownership of Repaired Parts: Any spare parts that have been repaired orreplaced remain the property of TEcs..

5.Exclusions from Free Maintenance: ltems gifted for promotionalpurposes are not covered under the free maintenance service..

purposes are not covered under the free maintenance service. Please note that the details provided here are based on the information given and should be adjusted to align with the actual warranty policy provided by TECS, as applicable. It's also important to ensure that all terms and conditions are clearly stated in the warranty documentation provided to customers.

TECS's return and replacement policy is designed to ensure customer satisfaction and address any issues that may arise from the purchase of their products. Here's a refined version of the policy with clear guidelines:

Return and Replacement Policy

1.Eligibility for Replacement:

• If upon delivery and signature confirmation, the customer unpacks the product in the presence of the delivery person and discovers transportation damage.
• If the received goods do not align with the order description.

2.Eligibility for Return:

• If, within 7 working days of receiving the goods,the customer identifies any obvious manufacturing defects
• If the product continues to exhibit quality issues due to non-human factors after a replacement has been provided.

3.Conditions for Rejecting Requests:

• If the product is damaged during transportation and the delivery personnel did not offer a resolution at the time of receipt. For requests made beyond the 7 working days from the date of product sale.
• When the customer is unable to present valid proof of purchase, or if the provided documents are suspected to be forged or altered.
• If the product has been inspected by the technical support department of TECS Company and found to be free of quality issues.
• For quality issues resulting from accidents such as collision or burning, unauthorized modifications, the presence of foreign substances (e.g., water, oil, sand), incorrect installation, misuse, or operation that deviates from the provided instructions.
• If there is evidence of tampering with product labels, serial numbers, or anti-counterfeiting marks.
• For damages caused by irresistible forces, such as fire, flood, lightning, traffic accidents, and other acts of nature.

How to Request a Return or Replacement:

• Customers must contact the original channel of purchase to inquire about and initiate the return or replacement process within the specified time frames.

Important:

• The policy is subject to verification by TECS, and all decisions regarding the acceptance or rejection of return and replacement requests are at the discretion of TECS.
• Customers are advised to keep all original packaging, documentation, and accessories with the product when a return or replacement is requested.

This policy aims to provide clarity and assurance to customers regarding their rights when purchasing from TECS, ensuring a smooth process for addressing any product concerns.

Below is a refined version of the warranty and maintenance service policy, detailing the conditions under which the service is applicable and the situations that are excluded from coverage:

Warranty and Maintenance Service Policy

Conditions for Fre Maintenance Service:

1. The product must have been used normally and is within the specified warranty period since the original purchase date,with no signs of artificial performance failure.
2. There should be no evidence of unauthorized disassembly, modification, or installation guided by unofficial or non-genuine manuals, and no other issues caused by human interference.
3. The product's serial number, factory labels, and all other original indicators must remain intact without any tears or defacement.
4. The customer must provide valid proof of purchase, including documents and warranty certificates.

Exclusions from Warranty Coverage:

1. Products that are outside the warranty period.
2. Products purchased from unauthorized or unofficial channels.
3. Issues resulting from human actions, such as damage caused by misuse, mishandling, or accidents.
4. Failures due to operation and installation not in accordance with the user manual's instructions.
5. Damage caused by unauthorized disassembly or
   modification.
6. Failures due to normal wear and tear or natural disasters.
7. Issues arising from the use of third-party parts that affect reliability and compatibility.
8. Damage or malfunction caused by incorrect installation, operation, or use in environments not specified for the product (e.g., extreme temperatures, humidity, altitude, unstable electrical conditions).
9. Malfunctions occurring from the use of the product for illegal activities.
10. Failures or damages incurred while flying in public safety zones, over populated areas, or in hazardous locations.
11. Damage caused by accident, abuse, or improper use.
12. Damage due to improper storage conditions.
13. Issues resulting from the use of self-compiled or non-publicly distributed software that affects normal product operation.
14. Damage caused by repairs or services performed by non-authorized service providers.

How to Obtain Warranty Service:

• To avail of warranty service, customers should contact the authorized service center or the point of purchase with the necessary proof of purchase and describe the issue encountered.

Note:

• TECS reserves the right to verify the condition of the product and determine the eligibility for warranty service.
• This policy is subject to change, and customers are advised to refer to the most current version provided by TECS.
• Customers are responsible for any costs incurred from services not covered under the warranty.

This policy ensures that customers are aware of the support they can expect from TECS while also setting clear
boundaries for the circumstances under which the company is not liable for product defects or damages.

Customer Service Guarantees and Policies:

1. 7-Day Product Guarantee

• If your order arrives damaged, not working, or with incorrect items, contact TECS within 7 days of receipt for a resolution.
• Provide a video or photo depicting the issue for assessment.
• TECS will determine if the damage occurred during shipping or due to other causes and will then offer a refund or replacement.

2.Product Warranty

• TECS products come with a 12-month warranty, covering quality issues that arise within this period.

Additional Return Information:

1.Restocking Fee

• TECS may charge a restocking fee for returns without quality issues to cover shipping costs. This fee does not apply to defective products.

2.Packaging and Tracking

• All returns must be well-packaged to prevent damage during transit and shipped with a method that provides tracking information. TECS is not liable for damage that occurs while the item is being returned.

Note:

• Before shipping your return, inspect the product carefully. Any signs of wear or use may lead to a rejected return.

These policies aim to provide clarity and reassurance to customers, ensuring a supportive and responsive customer service experience with TECS.