For heat pump samples delivery, after packing with export class thick 5 layers paper box, we will pack heat pumps with poly wood case to avoid any damage as shown attached.
There are two ways to delivery the samples.
For sea freight, we will keep the refrigerant inside of the heat pump.
For air freight cargo, due to the air line regulation, we need to drain out the refrigerant. So you need to charge the refrigerant if you find the heat pump cannot start.
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