Shanghai Longway Optical Instruments Co., Ltd.  （NINGBO YILIAN TRADE CO., LTD.） is one of the professional enterprises of developing, manufacturing and selling optical microscopes in China. At present, our company has advanced equipments, first-class technology and industrious employees. We can produce over 200, 000 sets of microscopes every year and 98% of them are exported to different countries all over the world. We devote ourselves to offer best products and service with most reasonable price to factories, educational institutions, medical organizations and laboratories all around the world.

We have nother factory named Shanghai Yueping Scientific Instruments Co., Ltd. , which is specialized in manufacturing various kinds of weighing scales (electronic balances), moisture analyzers, viscometers, density meters, etc. Our products are widely used in researches on spinning, metallurgy, chemical industry , medicament , light industry , agriculture , the scientific researches in universities.

Our products are certified by ISO and CE. We also offer OEM as customers' requirement. High quality , advanced technology , first-rate working condition , strict supervision , professional  workers are our features.

We are looking forward to cooperating with both domestic and abroad customers and friends for a brilliant future.