Is Langfang Jiulian safety clamp good?

All right. According to the query of double xenon lamp modification network, Langfang Jiulian safety tongs are made of steel, with good quality and reasonable price, and will not cause harm to opponents when used. Safety clamp is the safety protection device of elevator. When the elevator speed exceeds the limit speed set by the elevator speed limiter, the elevator safety clamping device is operated by the speed limiter.