平面內墻頂棚蓋板型變形縫 ZKNQ-GB-P

轉角內墻頂棚蓋板型變形縫 ZKNQ-GB-L

1.simple structure, large scalability, no screw on surface

2.commonly-used in indoor equipment.

Disadvantages:

Due to the reason of its own structure, the outer base is not completely on the same level with the cover board.