Given the current tense international situation and the unstable oil prices, as well as the significant fluctuations in the prices of HDPE and PVC pipeline materials, the following statement and adjustment have been made：
- The validity period of the current quotation is only two days. If the contract is signed within these two days, the price in the quotation will remain unchanged. However, if it is signed after two days, a new quotation will be required.
- Regarding the payment terms, currently the company accepts a minimum prepayment ratio of 50%. Any order requires a prepayment of more than 50% before the material ordering and production can be arranged.
