| http://www.w3.org/ns/prov#value | - Our philosophy is to fuse innovation with social commitment, said HLL chairman and managing director M. Ayyappan.HLL Lifecare Ltd, with its headquarters here in the Kerala capital, is one of the world's biggest contraceptive manufacturers.The company said graphene is a two-dimensional material consisting of a single layer of carbon atoms arranged in a honeycomb or chicken wire structure.
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