... 4) Frequency: 510-410 Hz, +/-20 Hz HTAP Auto Parts Co., Ltd., was established in 1998, specializes in production of car horn ... Name: China HTAP Auto PArts Co.LtdAdd.: No.86 Jianshan Industrial Zone, Ditang Town, Yuyao City, Zhejiang, ChinaTel:86-574-62292328Fax:86 ...