Inquiry (采购产品): Caster Specifications Dear Caster Technology Corp, We are looking at caster options for some of our sourced products and would appreciate some technical information if possible on your line of twin wheel casters for office chairs? We are looking for a test method and specifications to determine how well a caster must roll and min/max rolling resistance. Also what are the applicable testing requirements/procedure to qualify a caster?Any help you could provide would be appreciated. Regards Dale W. Mason Knoll, Inc. **** Hidden Message ***** Dale Mason 18041 USA Company: Knoll, Inc. E-mail: dmason@knoll.com **** Hidden Message ***** dmason@knoll.com