The industrial development looks like a high-tech exposition. However, from the most advanced defense industry to the toy manufactory, All of them needs the basic common parts such as screw, post, rivet, bolt, nut,...etc. The success or failure of final products are usually depend on those basic parts. Thus, they are dutifully called the ",mother", of industry. Lately, technical advancement and quality assurance stimulate the search for better common parts and assembly. Many resources, especially in developed countries, have been poured into refining those common parts by the designed functional and metallographic studies. Top Screw Metal Co. has manufactured those basic parts for 20 years. We have always believed in our corporate principle the ",Practicality, Responsiveness, and Never-Ending Improvement for Customers", would enable us to earn your support and cooperation. Together, we will achieve and enjoy a ",world quality", product.