how to build a utility trailer

{"cid":"91189592","title":"40 FT 3 Axle Flat Deck Utility Trailer Steel Frame With Airbag Suspension","imgUrl":"https:\/\/img.chinax.com\/nimg\/b3\/3c\/889e0df58d3d4c75722ad4a5813a-200x200-1.jpg","attrs":{"Price":"Negotiable","Brand Name":"SUNSKY","Minimum Order Quantity":"2 Units","Delivery Time":"30 Working Days","Certification":"BV\/CCC\/CE\/DOT\/SGS","Place of Origin":"China","Payment Terms":"L\/C, T\/T","Supply Ability":"500 Units Per Month","Packaging Details":"2 Units Load Into 40\/45 FT Container","Materials":"Carbon Steel Q345B","Payload":"40 Tons","Dimension":"12410*2480*1540","Axles":"Fuwa Brand 13 Tons","Suspension":"Airbag suspension","Tires":"385\/65R22.5"}}

{"cid":"91221770","title":"Agriculture Shed Barn Buildings Prefab Farm Warehouses Metal Steel Structure Mini Trailer Farm Garden Tower Farm For Farming","imgUrl":"https:\/\/img.chinax.com\/nimg\/d8\/24\/e5eedae9963859437f0c51f3cd7b-200x200-1.jpg","attrs":{"Price":"40USD ~100 USD\/SQM","Brand Name":"QINGDAO KXD","Model Number":"KXDF-69","Minimum Order Quantity":"600 SQM","Delivery Time":"30 WORKING DAYS","Certification":"ISO","Place of Origin":"CHINA","Payment Terms":"T\/T","Supply Ability":"8000TONS PER MONTH","Packaging Details":"SEAWORTHY PACKING","After-sale Service":"Online technical support, Onsite Installation, Onsite Training, Other","Project Solution Capability":"Graphic design, 3D model design, total solution for projects, Others","Application":"Warehouse","Material":"Gr Q235\/Q345 Steel","Keyword":"Prefab Steel Structure Warehouse Workshop","Type":"Light Steel Structure Frame","Window":"Aluminum Alloy Window","Roof cladding":"Sandwich Panel Glass Wool","Customization":"Available","Model No":"KXD-SSW181","Shot Blasting Level":"SA 2.5","Main Structure":"Steel Structure Frame","Tie Beam":"Round Pipe Or Square Tube","Sample Time":"7 Days If Standard Parts We Have","Color":"Custom approval","Third Party Test":"SGS, BV, ITS","Foundation Type":"Concrete\/Steel","Thickness":"5-28mm","Fireresistance":"Fire-resistant materials used","Quick Built":"Easy Install","Web Width":"7-28mm","Service Life":"20-50 Years","Connection Type":"Bolted, Welded"}}

{"cid":"91222664","title":"Fiberglass Foton Electric Gear Box Truck Trailer Vehicle Lorry Mini Cargo Van","imgUrl":"https:\/\/img.chinax.com\/nimg\/0c\/a7\/6b32743d28e51e0e00a96b8887f6-200x200-1.jpg","attrs":{"Price":"8000-15000 USD","Brand Name":"BIOCLEAN","Model Number":"BCCVB-FG","Minimum Order Quantity":"1","Delivery Time":"40 Workingdays","Certification":"SGS-CE-OWB-2022-1098","Place of Origin":"NINGBO CHINA","Payment Terms":"T\/T,Western Union,MoneyGram","Supply Ability":"10000 Units per year","Packaging Details":"Custom steel frame crating","Model":"BCCVB-FG","Gross Vehicle Weight (GVW)":"4.5t","Rated Loading Capacity":"2.6t","Engine Model":"Xichai 6DL3-46E","Engine Power":"205kw","Emission Standard":"Euro VI"}}

{"cid":"91181450","title":"Adjustable Speed Electric Transfer Trolley Motorized Trackless Utility Vehicles","imgUrl":"https:\/\/img.chinax.com\/nimg\/a5\/70\/84ca797176b07c8442ae840507a6-200x200-1.jpg","attrs":{"Price":"USD 2000~7800 set","Brand Name":"electric battery powered trackless utility vehicles","Model Number":"electric battery powered trackless utility vehicles","Minimum Order Quantity":"1 set","Delivery Time":"20 work days after received balance payment","Certification":"CE ISO SGS","Place of Origin":"China(mainland)","Supply Ability":"100 sets month","Packaging Details":"trap and wooden case","Product Name":"electric battery powered trackless utility vehicles","Capacity":"1-300T","Table Size":"Customized","Height":"Customized","Running Speed":"0-50\/min(Adjustable)","after-sales Service Provided":"Engineers available to service machinery","Control Mode":"Pendant\/Remote\/PLC Control"}}