Bao Jun 25 roofing systems, the use of special legislative side and automatic occlusion device, two strips along the side stand up the whole length of the pre-plate, leaving the roof by a double folding lock connection as a whole, are fully enclosed metal roofing system. 25 fastener roof system is divided into: fixed fastener and slide fastener. System board rib is usually high 25mm. For the plate surfaces and more complex in terms of roof shape is easier to achieve, is widely used in villas, clubs, museums, galleries and so on. 
 System advantages: elegant appearance, roof lines and slim roof design does not affect the results; overall structural waterproofing, drainage; structure simple, lightweight, safe, typhoons, heavy rain area is especially suitable; automatic control of mechanical construction, installation of flexible, fast, precision, economy; their effective lightning protection performance; limit stretching, stretching does not produce stress on the structure; sealing performance, sound effect; maintenance, environmentally friendly recyclable.