We are SENGXING INSTRUMENTS CO., LTD. we mainly produce and supply survey instruments and accessories, laboratory equipment and accessories, railway tools and all kinds of construction tools. We have 6 years production experirence and more than 15years service experirence. Now we have more than 200 workers and advance producing machine. we insist on controlling strictly prodution quality and make sure our products have excellent quality, precise dimension and strictly meet related international standards. Sincerely hope to cooperation with you and welcome contact us when you have any requirement.