③:
Step.1:Use 30 bolts 2# gaskets and nuts
to fix part #G3,#G8 and #G4 on the
cornice of roof panel.
Step.2:Use 8 bolts 2#,gaskets and nuts to
cover part #G7 on the connection
of part #G3 & #G8/ part #G8 &#G4.
Repeat the above producers to assemble
another side.
2 2
