Sung-il company specializes in the development and production of
GRP performance products of GRP performance products including
Water Tanks, bathroom materials, windows, doors and exhaust
pipes.
Sung-il\'s large-scale plant and researcj center are dedicated to
outgoing development and production to lead the industry. Our
advanced technology has received ISO 9001, ISO 14001 certification
and has got Q mark(UK) for door and is garnering world
acclaim.
