What brand of thread is good?

Jiangsu brand, leading enterprise in cable industry, A-share listed enterprise. I have been focusing on making wires and cables for 37 years, with high quality and high cost performance. Their wires are made of oxygen-free copper, which has stable low resistance and conductivity; But also has uniform thickness to prevent breakdown; Insulation, flame retardant and corrosion resistance. I bought this brand myself, and the electrician said it was very good, and the threading was very easy and soft. The outer insulation skin is made of flame-retardant high-quality pvc material, which has the advantages of energy saving, low resistance and large current carrying capacity. The usual price is 352 yuan/100m (BV2.5 firewire).