The diagrams below 
shows
 the stages used in the Change the verb form
show
cement
-making process and Use synonyms
equipment
 which helps to produce concrete out of Correct article usage
the equipment
cement
, for building purposes.
 The first Use synonyms
diagram
 illustrates Use synonyms
cement
 Use synonyms
production
 which concludes 4 stages Use synonyms
as 
crushing limestone and clay, Change preposition
apply
then
 mixing in Linking Words
mixer
 crushed powder is mixed and Correct article usage
a mixer
heat
 through Wrong verb form
heated
specialized
 machine called Add an article
a specialized
rotating
 heater, as it heats Correct article usage
a rotating
finally
 goes to Linking Words
grinder
 and becomes.
 The second Add an article
the grinder
a grinder
diagram
 shows concrete Use synonyms
production
 which includes 4 Use synonyms
ingridients
, it is Correct your spelling
ingredients
cement
 15 %,water 10%,sand 25% and gravel 50% . All these products are Use synonyms
mixes
 in Wrong verb form
mixed
machine
 called Add an article
a machine
concrete
 mixer.
  Add an article
a concrete
Overall
, the first process Linking Words
diagram
 shows Use synonyms
cement
 Use synonyms
production
, meanwhile the second Use synonyms
diagram
 is about concrete Use synonyms
production
.Use synonyms