how to build a log trailer

{"cid":"91190804","title":"Timber Mills Portable Trailer Scales Electronic Weight Machine For Truck 3\u00d715M","imgUrl":"https:\/\/img.silkroadsl.com\/nimg\/4b\/9c\/2f7103b95e751c139b185dd1d9da-200x200-1.jpg","attrs":{"Price":"Negotiable","Brand Name":"SMARTWEIGH","Model Number":"HWTS 7574","Minimum Order Quantity":"1 set","Delivery Time":"3-8 weeks","Certification":"ISO\/CE\/SGS","Place of Origin":"CHINA","Payment Terms":"LC,T\/T, Weston Union, MoneyGram","Supply Ability":"100 sets per month","Packaging Details":"Scales body with plastic film package, electronic parts with carton box","Max Capacity":"60-150T","Verification scale value":"10-20Kg","Weighing platform width":"3\/3.4meter","Weighing Platform length":"6-18m (can customized)","Civil work type":"Portable tempory frame instead of the civil works","CLC":"30% maxle axle load of the total capacity"}}