cleaning with sponge rubber ball
sponge-rubber lubricator
chloroprene rubber neoprene rubber
chloroprene rubber：neoprene rubber
cyclo-rubber (= cyclized rubber)
Metal Rubber-Silicone Rubber Laminated Composite
金属橡胶-硅橡胶叠层复合材料
金属橡胶-硅橡胶叠层复合阻尼材料
neoprene rubber chloroprene rubber
neoprene rubber：chloroprene rubber
Rubber and rubber product
Rubber buddling and rubber seedling
rubber support and rubber vibration isolation material
Sponge Block， Sponge Cushion
3-polybutadiene rubber BR