Best to go around the market and compare. The main comparison of these aspects: 1. wire diameter should be enough. 2. wire core appearance bright, smooth, without any stains, oxidation points. 3. wire insulation thickness is moderate, strong, not easy to damage, and the appearance of smooth, uniform, no particles. 4. wire insulation thickness is not too high. 5. wire insulation thickness is not too high. 6. wire insulation thickness is not too high. 7. wire insulation thickness is not too high. 8. wire insulation thickness is not too low.
The above can not look at a single, a variety of brands to compare.