AF1型燈箱（鋁制外框，帶轉(zhuǎn)角）簡介：AF1系列，此系列是我們多年來銷往國外的主要機種之一。客戶可能也比較容易接受此種機型。 AF1 Type(Aluminous frame with anodized corner) AF1 series (AL Frame, Clip frame with four anodized corner.), this series is a classical product for North American. AF3型燈箱（鋁制外框，全蓋式）簡介：AF3系列也是我公司一款比較成熟的產(chǎn)品。它是前蓋式的燈箱。由四枚螺絲側(cè)面鎖住前蓋。在公共場合比較不容易受到素質(zhì)較差的人員的破壞。 AF3 Type(Aluminous housing frame) AF3 series (AL Frame, Housing Frame), It is housing frame type with four screws beside the frame, it’s difficult to take the graphic from the light panel if there is no tool. AF4型燈箱（鋁制外框，四邊開式）簡介：AF4系列是四邊開的燈箱（Clip Frame），45度拼角，線條簡潔流暢。不同與AF1的風(fēng)格。設(shè)計合理，推出后很受客戶歡迎，其厚度只有33mm。 AF4 Type(Aluminous clip frame) AF4 series (AL frame, clip frame), the corner is for 45 degree connects, nice appearance and fashion. The thickness is just only 33mm.