> this link for tank upgrading and upgrading, not only sell!
> after the tank needs to be modified and upgraded, please purchase directly!
> all modified upgrades are modified after shipment, replace the original!
> partial modification takes time, less then 1 days, and more than 2 days!
> > before purchase, consult customer service first! Refitting is not suitable for all tanks!
modified built-in battery now integrated built-in alarm!
once filmed, you need to change the body and not accept any replacement!