... ,my name is Sophy Han,as the manager of export department of Ningbo Zongda Electric Appliance Spring Co., Ltd.Our company are ... : 2.8mm - 80mmThickness: 0.08mm - 3.0mmOn the other hands, we can custom made the spring you need according to you specification,so ... many new products such as SUS301,62Si2MnA, 60Si2MnA, 65Mn spring series. The main products of our company have been exported to oversea ...