We are professional calorimeter, heat conductor, tuning fork, pulley, magdeburg hemisphere, pascal ball, periscope, side wheel, lever, physics cart, alcohol burner, bunsen burner, test tube tongs, light reflect imaging, hand drive dynamo, slide wire rheostat manufacturer and factory in China. More types of calorimeter, heat conductor, tuning fork, pulley, magdeburg hemisphere,etc. wanted, please contact us right now!--http://www.yj-education.com
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Ningbo Yong Jing Science and Education Equipments Co.,Lld.