3.2 Installing the labels will have to be strong and stable, according to the specified in the scene down and how to install it, follow the instructions of the manufacturer by the approved by the supervisor.
3.2 The signage will be solid and even surface as specified in the method of installation, follow the instructions of the manufacturer. It has been approved by the supervisors.
3.2 installing signs must be stable, strong, straight, and the scene as specified in, how to install the ให้ปฏิบัติตาม instructions of the manufacturer. The approval of the supervisor