| http://www.w3.org/ns/prov#value | - Examples of surfactant are nonionic surfactant, for example, polyoxyethylene alkylether group such as polyoxyethylene laurylether, polyoxyethylene stearylether, polyoxyethylene cetylether, polyoxyethylene oleylether and the like, polyoxyethylene alkylaiiyl ether group such as polyoxyethylene octylphenolether, polyoxyethylene nonylphenolether and the like, polyoxyethylene-polyoxyethylene block copo
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