Rubber Rings,but the steps

in en-us •  7 years ago 

1.Add Rubber sap of wooden stick
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2.Pull slower image
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3.A little while
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4.One day,at the sun-dried
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5.Wooden stick,Rubber took off again image
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6.Machine cut thin
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7.Rubber cut,Boil for a while image
8.To recover from the cooked
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9.Select the good and bad
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10.Sun-dried
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THE END
THANK YOU VERY MUCH.

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What are they used for?

where you want to use.
for example,any material used for the bonds .