From Plastic Model Store - 
Ukraine
Sector35 assemblied metal tracks links arrived! Quality is excellent. Additional links are provided to finish the track run with wire.
I’m delighted with the Sector35 products. Each set will save five to ten hours of build time vs using Friulmodellismo products.
The last two new sets of Friulmodellismo tracks I used were just nasty, low quality dross. Nearly every Fruil link had to be deburred and every hole redrilled or reamed out.
Overall, the cost of each set of assembled Sector35 tracks was slightly less than ordering an equivalent set direct from Friulmodellismo. Of course the Fruil’s then require clean up and assembly.
To offset the cost of quicker shipping, ordered several sets.