Residential & Commercial Interior Door Concealed Hinge 340 3D hinge

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180 degree hinge residential commercial interior door concealed hinge

 https://www.alibaba.com/product-detail/180-degree-hinge-residential-commercial-interior_60714989253.html?spm=a2700.galleryofferlist.0.0.2a0252350paVt9

180 degree zinc alloy 3d adjustable concealed interior door hinge

 https://www.alibaba.com/product-detail/180-degree-zinc-alloy-3d-adjustable_60714643062.html?spm=a2700.galleryofferlist.0.0.3d8e5235xF45H0