December 2017 saw the redelivery of HAECO Xiamen's first Boeing 757-200 passenger-to-freighter conversion for Mainland China's YTO Cargo Airlines; the conversion was carried out in conjunction with Supplemental Type Certificate (STC) partner, Precision Aircraft Solutions (Precision).

HAECO Xiamen partnered with Precision on its first Boeing 757-200 passenger-to-freighter conversion back in 2010, and has completed 18 conversions on this type of aircraft to date.