Sino Science & Technology Co., Ltd. is a professional designer and manufacturer of optical instruments: refractometer, microscopes and the instruments for gem testing and lab use. With abundant technology experience and strong capital ability, we are different from some other manufacturers in CHINA. All our products are manufactured by ourselves (NOT just assemble). So we are sure that all our products are in high quality and at competitive price.

With more than a decade experience in this field, we assure you that you will find SinoTech is your good partner once we have chance to offer our service to you!