Complex sentence: The pulp made by this process is known as stone groundwood "pulp (SGW), if the wood is steamed prior to grinding it is known as" pressure groundwood (PGW) pulp.
Split into simpler sentences: The pulp made by this process is known as "stone groundwood" pulp (SGW). If the wood is steamed prior to grinding it is known as "pressure groundwood" (PGW) pulp.