Established in 1981, Smart Lion Industrial is the leading manufacturer of construction and building materials in Taiwan. Products include pneumatic door closer, hydraulic door closer, knob latch, push button latch, fence & gate hardware, and more. Most of the products are exported to all over the world, including west Europe , north America , south Asia , Australia & Oceania , Japan , and so on. Smart Lion has been in the field of construction and building materials for more than 20 years, thus can offer you products with high quality and reasonable prices. OEM & ODM orders are all welcomed.