how to build an induction heater

{"cid":"91181095","title":"Reliable Induction Heater Stable Perf Durable Build Energy Save Accurate Temp","imgUrl":"https:\/\/img.ismap.com\/nimg\/66\/f2\/e541456a815b2a92115369fde2a7-200x200-1.jpg","attrs":{"Price":"US $ 3000","Brand Name":"YUYANG","Model Number":"GY-25A","Minimum Order Quantity":"Set\/Sets","Delivery Time":"5","Certification":"CE","Place of Origin":"China","Payment Terms":"L\/C, D\/A, D\/P, T\/T, Western Union, MoneyGram","Supply Ability":"20","Packaging Details":"1160 x 1040 x 1320mm","Max input current":"10-70A","Work power":"380V 50HZ","Auto retaining time":"1-99S","of coolThe flow rate of cooateling wring water: 7.5L\/Min 0.06-0.12Mpa":"7.5L\/Min 0.06-0.12Mpa","Type":"GY-25A","Fluctuating frequen":"30-100khz","Brand":"YUYANG","Output current":"200-1200A","Weight":"31KG"}}

{"cid":"91148828","title":"Seven Day Programmable Thermostat , Thermostat For Wall Heater","imgUrl":"https:\/\/img.ismap.com\/nimg\/ec\/b4\/a81a269fd1acd425127eb4b02240-200x200-1.jpg","attrs":{"Price":"negotiation","Brand Name":"OEM ODM","Model Number":"S2301","Minimum Order Quantity":"100pcs","Delivery Time":"30 DAYS","Certification":"CE LVD EMC","Place of Origin":"CHINA","Payment Terms":"T\/T","Supply Ability":"100000\/MONTH","Packaging Details":"I piece in color box,8pcs in innex box,2 innex boxes in 1 out carton","Material":"OMRON Relay","VOLT":"16V","Color":"white","programmable":"Non programmable","Contact rating":"8(2)A 230VAC Max","POWER":"2*AAA size battery"}}