FAQ

About the sample

• Can the sample be returned?

After the test is completed, it can be returned according to the requirements of the entrusted party; if you need to return it in advance, please send us a return notice. After receiving the notice, we expect to send back the unused samples within one week.

• Where are the samples sent?

Please send it toShanghai Guozhiwei Technology Development Co., Ltd.Current address.

• Can samples be collected on Saturdays, Sundays and holidays?

Sample express delivery on Saturdays, Sundays and holidays will be temporarily stored in the company and will be officially collected on working days.

The specific situation is alsoPlease contact us。

• How to fix the packaging samples?

Please refer to the method exampleSample delivery，Please contact us for details。

• How many samples are required?

Depending on the purpose of the test and the analysis method,Please contact us for details.

About analysis

• What are the analysis methods?

SeeAnalysis Techniques Column。

About Confidentiality

• Can I sign a confidentiality agreement?

Can. Please contact the person in charge orContact Us, please refer toAnalysis of trust terms。

About Order

• Please tell me the method of commission analysis.

Please contact us first, please refer toDelegation process。

• How to get a quote?

Please contact us first。