Sun John Corporation was established in 1978 and has been a manufacturer of asphalt roofing felts until 2005. From the very beginning, we have been determined to play a leadership role in the field of waterproofing materials, so in 2007 we set up a new production line for self-adhesive waterproofing membranes. In the recent years, we have broadened our scope to include other special purpose membrane systems and coating systems.