User agreement

1. Once the chemicals are arrived in your hand, please check if the package is intact, the chemicals are same as the contract and the quantity is enough. Please send your feedback to us in three wrking days after it was signed if the above issue happens.
2. The chemical quality has to be inspected and send your feedback about its quality issue according to the agreement in 30days.
3. If we don't get feedback about the chemical quality and quatity issue within the allotted time, we supposed that the chemical quality and quatity is meet your requirements, no any other issue.

PS: If there are quality issue, please send your feedback with the test results.