We are a trading&factory combo.

No MOQ required, buying 1 unit valve is also ok for us.

Regular samples are available, OEM ones will take 10 days around.

carton box, plywood cases.

Usually 30% Deposit , the balance before shipment.

In order to ensure the lowest unqualified rate, All of our products will be tested step by step before shipment and produced according to the valve standards in your side.

Yes, we have, but normally free under 10 USD.  the samples fee could be deducted in your first order if above 10 USD.