Because the earliest pliers produced by the state-owned hardware factory had a tiger head trademark logo on them.

In the late 1940s, six master workers, including Li Aimou, established a tool processing factory in Yuanji County, Henan Province—now Weihui City—to produce various hand tools. Among them, the most famous product is the Tiger Head brand wire cutter (a majestic tiger head is engraved on the hinged surface of the clamp body). The Tiger Head brand wire cutter has been sold into major factories and cooperatives in China. Due to the conscience of its production, the products are durable. , won praises from many people, and coupled with the Chinese people's personality of being nicknamed easily, wire cutters were called vise pliers from then on!