any Copper coin/pot RP full function 5yrs+ check whatever ch (RP)
any Copper coin/pot RP full function 5 yrs+ check whatever having chemical 1/4 lit. Put only one drop in any copper coin it will full in function check what ever you want it will remain more than 5yrs. 5ml c cost 75L first you can take trial on spot.if want then email only please.
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