Chang-Ruenn Technology is a leading designer and manufacturer of torque testers & testing machines used for tools and hardware. We always aim to strengthen our design and production ability to provide better services and high-tech products for our customers. We not only offer stable quality, but also upgrade our customer service all the time. We hope we can help customers upgrade productivity and reduce cost.Our testing machines can be used in automation technology with a variety of levels, help meet customers' demand and enhance competitiveness.