I used to work in a logistics company, which makes its profit by taking advantage of information gap, instead of helping society function efficiently as the services should have been, it creats extra burden on companies by setting up information barricade. So I quit and come to the company below: DK Photonics-the leading companies in designing and manufacturing of high quality optical passive components mainly for telecommunication, fiber sensor and fiber laser applications. And the most important is the ideology that making deserved profit based on our high quality goods and reasonable price.