Sino Science & Technology Co., Ltd. located in Zhangzhou, which is a small, beautiful and calm city in CHINA mainland! We began our   optical instruments business from 2001, having a factory with 3300 meter squares,5 experts in optical and electronic designs. We have tens of patents of refractometer, microscope and gemstone identify tools. The refractometer and fiber inspection microscope were our first business at the beginning. In 2003,   the gemstone identify instruments were introduced to our business. Now,we can make the full line instruments for gemstone test. With the quick growing in business,  we invested to make all kinds lens and prisms.  And we also distribute the scientific test instruments for lab using and all kinds of measuring work, such   as caliper. Our target is to offer all our instruments in high quality and at good price, and to ensure all our clients can win more and more profits! From a small company only with fifteen thousand US-dollars value to,  a company with at least two million US-dollars in 2008, we used 8 years. SinoTech is a group company with full experience, the business covers the refractometer,  fiber inspection microscope and all kinds of gem test instrument.  In 2010, there will be new video model added in our microscopes' series.  The borescope for auto repair will be introduced,    too.   Our new factory building will have at least 12000 meter square in 2011. For all our success in business,   we thank all the partners and customers  in the world. With sincere support and  help from them, we grew so quickly! Insisting on the spirit of innovation, honest and win-win cooperation, we are becoming a modern enterprises group. And we sincerely hope that we could do more and more work to the circumstance protesting and offer more help to more people who need help!Always try our best to do, this is our promises!