Plummer Blocks: SD3100 Series, SD3000 Series China Jiangsu Powell Machinery Manufacturing Co., Ltd. Base Info Model NO.:SD3100 Series, SD3000 SeriesTrademark:PowellSpecification:GB,T 7813-1998, ISO113: 1999Origin:Yancheng, Jiangsu, China Description Pre:Plummer Blocks: Sn200, Sn300, Sn500 Sn600, Sn3000, Sn3100 Series Next:Pillow Blocks: Ucp200 Ucp300 Series