Suzhou Unique Hardware Co., Ltd.   Contact Name:Mr. Liang Phone:0512-65990836 Fax:0512-65410378 Address:South Beiqiao Town, Xiangcheng District, Suzhou City Zipcode: Email: Website: http://www.younike.net DIN|IFI|SP| DIN product:Plain washersSpecial washersThreaded barWashers for use in structural steelwork IFI product:Plain Washer SP product:DIN DIN 6340 Washers for clamping devices DIN EN ISO 7089 Plain washers-Normal series-Product grade A DIN EN ISO 7093-1 Plain washers-Large series-Part 1: Product grade A(ISO 70931-1:2000) DIN EN ISO 7093-2 Plain washers-Normal series-Part 3: Product grade C(ISO 70936-2:2000)