history of the microscope

{"cid":"91187707","title":"Plastic Handle 0.45X38mm EMG Needle Electrodes Nr.10.1-38 Model","imgUrl":"https:\/\/img.ismap.com\/nimg\/99\/73\/74d3a37ee2d06e49c20a1725e3ed-200x200-1.jpg","attrs":{"Price":"negotiation","Brand Name":"REPUSI","Model Number":"Nr.10.1-38","Minimum Order Quantity":"4 box ,25pcs per box","Delivery Time":"Normally 7 work days","Certification":"CE , ISO13485","Place of Origin":"Suzhou ,Jiangsu ,China","Payment Terms":"Western Union, T\/T, L\/C,paypal,etc., , ,","Supply Ability":"10000k pcs\/month","Packaging Details":"individual pouch ,25pcs per box , The outside box sizes according to the quantity","Handle":"Plastic hub","color":"Red","shelf time":"24 months","Application":"(EMG)Electromyography","Model type":"Nr.10.1","Sterilization":"EO","Packing":"25 needles per pack","Needle diameter":"0.45mm","Needle Length":"38mm","Usage":"One time used only"}}

{"cid":"91201766","title":"SGS Synthetic Sapphire Crystal For Sapphire Lens \/ Electrical Insulator","imgUrl":"https:\/\/img.ismap.com\/nimg\/4d\/4c\/debcd1831ef2db71919acbf924a7-200x200-1.jpg","attrs":{"Price":"Negotiable","Brand Name":"SILIAN","Model Number":"Customized","Minimum Order Quantity":"50pcs","Delivery Time":"5-8 weeks","Certification":"SGS\/ ISO","Place of Origin":"Chongqing\uff0cChina","Payment Terms":"Western Union, MoneyGram, T\/T","Supply Ability":"20,000 pcs\/month","Packaging Details":"Wooden packing","Name":"Synthetic Sapphire Crystal","Thermal Conductivity":"46.04@0\u2103 25.12@100\u2103 12.56@400\u2103(W\/(m.k))","Purity":"\uff1e99.996%","Density":"3.98g\/cm\u00b3","Refractive Index":"1.762~1.770","Crystal Structure":"Hexagonal System a=4.76A c=12.99A","Thermal Capacity":"0.10cal\/\u2103","Usage":"Sapphire Lens, Electrical Insulator\u200b"}}