The Sunsung are better fitting lines and IMO better quality if they are available. Fittings are the same as OE, they are clocked correctly which is huge, nice crimps and all the OE rubber isolators are in the correct places and all the hose has correct approvals and specs.
Chinese, yes but like a few other manufacturers there are not doing cheap knock offs but are a legit business trying to make a quality product and raising the aftermarket bar doing it. Other well known brand names rebox their product, the term Chicom junk is not applicable in this case.