Sinmer a professional OEM manufacturer for micro small metal tubes and solutions to tubing production with more than 15 years' production experience in micro small tubes. The smallest tube can be achieved is OD 0.25 mm and ID 0.09 mm. We can supply micro small stainless steel tubes, brass tubes, aluminum tubes, titanium tubes, carbon steel tubes and assembly parts made of micro small tubes and precision parts.We have professional manufacturing standard process of micro metal tubes, quality control standard procedure, material analysis process, packaging process, and transportation safety process.