x1000
(1)coolant(冷卻劑)=a liquid or gas used to cool something, especially an engine of refrigerator, or air-conditioner.How much is the "Coolant" costs ?
(2)Is there an expiry date?
----=Is there an expiry date to check on the "Coolant" ?
----=Is there a storage period ?
(3)How many times can a "Coolant" be used ?