The reference substance received is damaged and leaking.
What should I do if the reference substance received is damaged or leaking?
Answer: Taking your receipt time as the cut-off point, if damage or leakage is found in unpacking and inspection within 24 hours, the National Standard Products Network will unconditionally replenish the goods. Please unpack and inspect the goods in time after signing for the reference and standard products, and contact our company in time if any abnormalities are found, so as not to affect your free replenishment.
