
Invention of a tunnel trolley arm concrete construction pouring system

Invented a vertical wall pouring trolley

Invention of a tunnel waterproof board hanging cloth trolley

Invention of a prefabricated culvert handling device

Invention of 30 precast concrete square culvert molds

Invention of a concrete fabric machine

Invention of a concrete pressure retaining fabric pouring valve and pouring system

Invention of a surface repair device for building templates

Concrete T-shaped beam embedded parts

Hanging basket fence

Beam seam steel cover plate

T-section

Pre embedded parts for overhead contact line pillars

Concrete T-shaped beam embedded parts

Anchor cable pre embedded parts

Pre embedded plate for anti falling beam