| Industrialisation
of the world has brought about many social and economic changes in the past few
centuries. | Lubricants
have been, and are becoming an increasingly essential part of all machinery. | Metalworking
fluids provide lubricating and cooling effects which are essential to the production
of precision parts. | Silk
is a natural protein fibre obtained from cocoon of silkworm larvae. | Kerosene
is a flammable hydrocarbon liquid that is obtained from the fractional distillation
of petroleum. |
