16 4 feet vision test chart

{"cid":"91190363","title":"Decimal Type Four Hole 5m 16.4 Feet Vision Test Chart","imgUrl":"https:\/\/img.ismap.com\/nimg\/e3\/d2\/cf750a47390e99d4e808e85370d1-200x200-1.jpg","attrs":{"Price":"Negotiable","Brand Name":"KESHILONG","Model Number":"GD8020","Minimum Order Quantity":"1pc","Delivery Time":"7-20 work days","Certification":"CE","Place of Origin":"China","Payment Terms":"L\/C, T\/T, Western Union","Supply Ability":"500pcs\/month","Test Distance":"5m","Place of origin":"Wenzhou","Brand name":"KESHILONG","Warranty":"one year","Product Name":"LED Visual Chart","Delivery time":"7 working days","MOQ":"1pc"}}

{"cid":"91178288","title":"Professional Ph Indicator Paper , Litmus Paper For Ph Testing 16 Feet Length","imgUrl":"https:\/\/img.ismap.com\/nimg\/2f\/41\/b5c24d5dd897cecc012e8ca2b664-200x200-1.jpg","attrs":{"Price":"negotiation","Brand Name":"YIERYI","Model Number":"TPH02112","Minimum Order Quantity":"100 pcs","Delivery Time":"5-8 work days","Certification":"CE","Place of Origin":"CHINA","Payment Terms":"L\/C, D\/A, T\/T, Western Union","Supply Ability":"10000pcs per month","Packaging Details":"Export packing","packet":"disc","ph value":"0-14","Paper length":"5m \/ 16ft","contrast":"Compare the colors according to the color","Measurement purposes":"Acid and alkali","indicates neutral":"7"}}