Can anyone introduce what Zhengzhou Sign Factory mainly does?

As far as I know, Zhengzhou Sign Factory mainly produces some transportation facilities, reflective materials, electric power signs, coal mine signs, communication signs, safety warning signs, safety placards, mine safety signs, fire safety signs, and occupational disease warnings. Design and production of signs, road safety facilities, parking facilities, construction site safety slogans, gold foil medals, metal corrosion signs, campus cultural signs, hospital signs, park scenic spot signs, department signs, floor signs, and overall signage system projects, installed.