Previous title of KEEN Machinery Co., Ltd. was JU SHENG Precision Machinery Co., Ltd., with nearly 40 years of grinding machine manufacturing experience: e.g., hydraulic transmission internal, external, surface and centerless grinding machines.

We have concentrated on developing internal grinding machines since 1994. The Auto hydraulic internal grinding machine we developed at that time has obtained a patent and good reputation. Customer demand led us to develop our CNC internal grinding machine in 2001. Newly developed CNC Multi-Function Cylindrical Grinding Machine is the first with double spindles in Taiwan; we have obtained multiple patents at home and overseas for it. Our CNC Multi-Function Cylindrical Grinding Machines are suitable for grinding bearing sleeves, chucks, along with automobile, motorbike and sewing machine parts, among others.

We always insist on providing Innovation, High Quality and Excellent Service to our customers. We have enjoyed continuous growth, thanks to efforts of all our staff and supports from our customers. We keep doing our best to customers in the future.