The L. S. Industry Co.,Ltd. Is the leading nail company of Thailand. For the past 40 years, The company has produced a variety of high quality nails and steel chains under the brandname of "Liang Seng", Our products are well accepted from clients both the government and private sector. Initially, the company produced zinc nails and steel nails and become developer of modern square boat nails and rectangular nails production. As a result of longtime experiences and high quality products, The L. S. Industry Co.,Ltd. Was appointed a committee to draft a standardize criteria from the Ministry of Industry for wood screws and lag screws. Our products consist of lag screws, wood screws. Concrete nails, common nails, furniture nails, rectangular boat nails, square boat nails, commercial chain, rivet nails, shoe tacks nails, tacks nails, brass nails, zinc nails and a various kind of special nails under brand name of "Star", "Bird" and "LSI" respectively.