Hangzhou GSR-Threads Tools Co.,Ltd is one of branch companies under GSR Group, which focus on "threads cutting tools", "threads repairing tools" etc. The headquarter of GSR Group is located in Remscheid of Germany. As a mother company, GSR Germany (GSR Gustav Stursberg GmbH) is in charge of business operation of whole Group, including: Marketing, GSR Brand Promotion, Products Research, Quality Supervision, Production Design and High-End Customizing.