In our company, the quality is the most thing. Every one products, we usually test it strictly before ship out our door. In general, less clients return not good quality to our company.
Of course, we promise that two years warranty about our products, the date is from our clients receive the products(for example compressor, within one years warranty. During the time, every goods itself quality issue, not including damage during shipping , wrong use way or not use R134a compressor oil, which cause our products not work noramlly, we can accept your returning.
For the returning all cost, it should be paid by buyer, including freight that ship to seller, and also the other customs tax. ( Especially note: if we have cooperated over one year, and your credit is good in our company, then we would like to pay the freight that the goods return to us ).