total categories   -Motorcycle series    |-motorcycle brake pad    |-motorcycle brake shoe    |-motorcycle friction plate    |-paper base friction plate   -Automobile series    |-automobile brake pad    |-automobile clutch face    |-automobile brake lining    |-automobile paper base friction plate   -Engineering machine series    |-electric chain hoist friction plate    |-paper base friction plate   -Electromechanical friction plate series    |-electric machine friction plate   -Garden machine series   -cuprum base friction plate   -Ship series   -Other