Longsun Group Co., Ltd., founded in 1986, is a research, production and sales in one of the leading enterprises in electrical contact materials, the Group expensive / inexpensive metal composite strip, electrical contact materials, precision punching contact element, solar Silver aspects of the indu
Sell
Longsun Group Co., Ltd., founded in 1986, is a research, production and sales in one of the leading enterprises in electrical contact materials, the Group expensive / inexpensive metal composite strip, electrical contact materials, precision punching contact element, solar Silver aspects of the indu