On July 4, in early trading, Taicang's spot reference negotiation was held at 2,160 - 2,170 yuan/ton of ex-warehouse cash, and the basis was held at +10 yuan/ton, high-end small orders;7. The basis reference was held at +20~+25 yuan/ton, 8. The basis difference was held at +15~+20 yuan/ton, and 9. The basis difference was held at +25~+30 yuan/ton.