The blow diagram 
diplays
 the process of making Correct your spelling
displays
cement
 and what equipment Use synonyms
are
 used, Change the verb form
is
next, 
producing concrete aimed at constructing buildings Linking Words
by
 Change preposition
with
cement
 is pictured.
Use synonyms
Overall
, it is readily apparent that the final product (concrete) is made of Limestone and Clay, Linking Words
subsequently
, water, sand and small stones, called Gravel, Linking Words
also
 are added. 
Linking Words
Firstly
,Limestone and clay pass the crusher and powder is the result. Linking Words
Furthermore
, a mixer is in the way Linking Words
befor
 the powder Correct your spelling
before
will be
 heated in Wrong verb form
is
rotating
 heater, Correct article usage
a rotating
then
 Linking Words
grinder
 is the final stage and bags are ready to be filled Correct article usage
the grinder
by
 Change preposition
with
cement
 after passing that.
Use synonyms
Secondly
, in concrete Linking Words
production
 Add a comma
production,
it is clear that
 Linking Words
final
 import which is buildings-concrete Correct article usage
the final
include
 four different Correct subject-verb agreement
includes
ingredient
 Change to a plural noun
ingredients
such
 as water and sand, Linking Words
their
 percentages are 10% and 25% respectively. Correct word choice
and their
Moreover
, the biggest portion of goods is Gravel, Linking Words
is 
Unnecessary verb
apply
accountent
 50% Correct your spelling
accountant
while
 Linking Words
the 
Correct article usage
apply
cement
 Use synonyms
accupied
 just 15% of the product. All these materials are added Correct your spelling
occupied
each
 other in the concrete mixer.Change preposition
to each