What material is the signboard made of?

Community signs are made of acrylic, aluminum, iron, stainless steel and copper. Acrylic board is generally used indoors, but it is not recommended to use it outdoors, because in summer, the temperature is too high and it is easy to deform. The main difference between aluminum plate and stainless steel plate lies in their strength. Generally, these two kinds of boards are mostly used outdoors, and they are both anti-corrosive. Copper plates are generally suitable for high-grade villa areas, but they are expensive! Acrylic can generally be used for more than 3 years, except for artificial damage, aluminum plate and iron plate can be used for 2 years, and stainless steel plate and copper plate can also be used for 3-5 years without artificial damage.

Product list of real estate identification system: sales center signs: outdoor signs, theme signs, sales center signs, guide flags, image walls, model house signs, function signs, model house tips, floor plans, data racks, model house display instructions, consultation offices, negotiation offices, regional signs, and engineering information display boards. Environmental identification signs: landscape name signs, instructions for the use of public facilities in residential areas, bulletin boards, signs for you forever, environmentally-friendly trash cans, leisure chairs, and building identification systems: building signs, floor signs, unit signs, house numbers, unit announcement (notice) columns, elevator ride instructions, letter boxes, fire hydrants, equipment door signs, fire evacuation maps, and barrier-free passages. Environmental warning signs: Do not paddle, do not climb, precious tree name plates, house numbers with warning signs in power distribution room, warning signs for underground pipelines, and grassland environmental protection signs. Warning signs placed on the ground: do not stop, slide carefully, clean during maintenance work, and indicate sign design: general plan, multiple signs, property management office, parking lot signs. ?