Persisting in "High quality, Prompt Delivery, Aggressive Price", we have established long-term cooperation with clientele from both equally overseas and domestically and get new and old clients' higher comments for Spring Constant, Newton"s Ring, Kinetic Friction Coefficient, Lens Aberration,Liquid Conductivity. We have been in operation for more than 10 years. We are dedicated to quality products and consumer support. We invite you to visit our company for a personalized tour and advanced business guidance. The product will supply to all over the world, such as Europe, America, Australia,Porto, Mumbai,Poland, Cape Town.Our mission is to deliver consistently superior value to our customers and their clients. This commitment permeates everything we do, driving us to continuously develop and improve our products and the processes to fulfill your needs.