Light Liquid Hydrometer Hdm001 Heavy Liquid Hydrometer Hdm002

Ningbo Free Trade Zone Yong Jing International Trade Co., Ltd. specializes in supplying teaching equipments used in primary and high school education, with a variety of several hundreds of types of teaching materials and equipments, especially for biology, chemistry, physics and earth science, etc. We have overseas customers all over the world, more than 50% of our products are for export. Most of our teaching equipments exported to USA, Europa, South Asia, and Middle East.