Zippers work better if you rub candle wax on them.
The worldwide, 24-hour a day rate of zipper production is 28 miles per hour (45 kph).
Zippers
Edutainment
Zippers work better if you rub candle wax on them.
The worldwide, 24-hour a day rate of zipper production is 28 miles per hour (45 kph).