According to Sharp official website's inquiry, the heating of the front bumper is a very thin heating wire covered by the front glass interlayer (Ford patent), which can't be seen if you don't look carefully. It heats up after being electrified, so there is one at the front and not at the back.
18 Ford sharp two-wheel drive platinum sharp 7-seat car, the guide price of the new car in that year was 259,800 yuan, and the current table shows 60,000 kilometers, and the seller quoted17,000 yuan.