somE oF thE low-EnD mADE-in-ChinA mEChAniCAl-ElECtroniC proDuCts ArE not sElling wEll in Export mArkEt As CompArED with whAt ArE tErmED As high-EnD onEs.
A．on Export mArkEt
B．in Exporting mArkEt
C．in ExportED mArkEt
D．in thE Export mArkEt