We provide one year factory quality warranty.

Our raw materials are purchased from qualified suppliers. And we have a strong quality
control team to guarantee our products quality.

5-7 days for air freight, 3-5 days for international express. 20-40 days for sea transportation.

We always ship sample order and MOQ order by Express ( Door To Door), such as DHL,UPS.

T/T, L/C, Western Union, Escrow,Credit Card etc.

No need to pay extra cost for our OEM service when your order quantity up to our OEM MOQ.

Yes, of course. We have 8 years of OEM manufacturing experience.

1-3 business days for sample order,3-10 days for MOQ order, 10-30 days for mass production orders (based on different
quantities).

Progress has certificates such as CE, FCC, ROHS,UL and so on.

Progress focuses on OEM/ODM high quality audio field products,such as bluetooth speakers,headphone,earphone,TWS earbuds etc.