山王 Company Profile

A leading company in the field of precious metal surface treatment processing.

Sanno Co., Ltd. is engaged in the precision pressing and mold manufacturing of electronic components such as connectors and switches, as well as precious metal surface treatment processing. Since its establishment, our company has focused on surface treatment processing, primarily of precious metals, responding to the needs of many customers, including those in the information and communication sectors, and has gained high trust and evaluation. In particular, our unique methods, such as reel-to-reel surface treatment processing and nickel barrier, have received great acclaim from our customers.