wencheng road Shanghai Shanghai 0, wencheng road

shanghai longway optical instruments co., ltd. is grounded on a mission to be the world’s leading edge Specific Gravity Tester Manufacturer and Exporter. Our product line revolves around biological mi...

3rd FL of Building B, 1505,Xinfei Rd.,Songjiang Industry Zone

Established in 2003, we are a specialized manufacturer of digital scales and pH meters. We have a wide range of products available for different uses, which include bathroom scales, pocket scales, kit...