2. The properties, models and raw materials of Gu Wei membrane are introduced in detail.

3. Gu Wei film has strict construction inspection standards, and each roll of Gu Wei film is marked with the film roll number, which is the certificate for customers to check and identify the authenticity on Gu Wei official website.

4. Regular Gu Wei dealers have authentic and valid Gu Wei authorized distribution certificate and famous car cooperation certificate.

5. The warranty period of real Gu Wei film is 5 years, with detailed warranty scope. The warranty card indicates the film model, film roll number and film sample. Gu Wei's warranty card is a special quality card in both Chinese and English, which is convenient for customers to check.

6. If you buy Gu Wei film in an authorized store, you can provide Gu Wei identity label "Gu Wei Xiao Huang Biao" for free.

7. Gu Wei film construction personnel must go through professional training in Gu Wei and obtain the construction technical certificate before film construction can be carried out.

8. Authorized stores in Weiguo all over the country can be found in Weiguo official website.