We introduce advanced computer digital controlling equipment, the products can be
made in form in one process and have high precision, small error and high quality.
The kinds of hole: long, square, round hexagon, scale stretch-special shaped hole.
Our production of punching-hole screening board is widely used in protecting from
ambient noise where the highway, railway and subway come through the city. It can
also be used in building wall power station, factory ceiling wall plate and other
source of noise in order to sound absorption.
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