suntayhvac subscribers 0 followers 0 Your Subscription suntayhvac - Change Subscription Activity About Videos Playlists Discussion More Channels Followers Following Subscribers Subscriptions Recent Activity 744 days ago06:49 suntayhvac has uploaded a video Hand-folding fire damper frame production line - China professional... Hand-folding fire damper frame production line is an improved model based on the riveting valve production line. There are two modes to choose from, plug-in type and welding type. plug-in type can omit the riveting process, greatly reduce the labor input, efficiency is significantly improved. It is the latest type of equipment for the mass produ...
