Now Wei wants to increase the tensile strength of his shoes. Most shoes on the market can withstand stress of eight kilograms before tearing apart at the seams, but a material developed by Buffalo achieves 13 kg. Still, Wei is not satisfied.
目前魏百慶亟欲增強的是鞋子的拉拔力（指鞋子不同部位連接處可承受而不會鬆脫斷裂的力道），一般市售鞋拉拔力只要 8 公斤就及格，而目前牛頭牌研發的材質可達 13 公斤，但魏百慶仍不滿意。