If you want to try strings that are made in China but of good quality (intonation wise and lifespan, I would say not bad actually regarding their price), you may search for Alice AWR 18 Normal/Hard tensions, these sets having crystal nylon trebles and antioxidation bass strings, or Orphee SC55/SC57, these also have antioxidation basses but dupont nylon 612 trebles.
I got them for about €5 per set, they sound pretty good on my Yamaha student models, much better than counterfeit China EJ45 for sure!
2017 Karel Dedain Spruce/Maple (Torres) 64cm
1998 Yamaha GD 10, Spruce/IRW 65cm
1988 Alhambra AL 8, Cedar/IRW 65cm