const getOfficialConverters = async (web3) => {
    let tokenAddress
    let tokenContract
    let symbol
    let converterCount
    let converterAddressLatest
    let converterContract
    let smartTokenAddress
    let smartTokenContract
    let smartTokenSymbol
    let obj
    const bancorRegistry = web3.eth.Contract(BancorConverterRegistryABI, BancorConverterRegistry)
    let totalTokens = await bancorRegistry.methods.tokenCount().call()
    totalTokens = web3.utils.hexToNumberString(totalTokens._hex)

    let tokenInfo = []
    let symbolArray = []

    for(let i =0; i<totalTokens; i++){
	try{
       tokenAddress = await bancorRegistry.methods.tokens(i).call()
       tokenContract = web3.eth.Contract(ABISmartToken, tokenAddress)
	// parse connector symbol
	try{
	symbol = await tokenContract.methods.symbol().call()
	}catch(err){
	// No Standard (return bytes32)
	tokenContract = web3.eth.Contract(ERC20noStandard, tokenAddress)
	symbol = web3.utils.toUtf8(await tokenContract.methods.symbol().call())
	}
       // parse latest converter
       converterCount = await bancorRegistry.methods.converterCount(tokenAddress).call()
       converterCount = web3.utils.hexToNumberString(converterCount._hex)
       converterAddressLatest = await bancorRegistry.methods.converterAddress(tokenAddress, converterCount - 1).call()

       // get smart token and smarttoken symbol
       converterContract = web3.eth.Contract(ABIConverter, converterAddressLatest )
       smartTokenAddress = await converterContract.methods.token().call()
       smartTokenContract = web3.eth.Contract(ABISmartToken, smartTokenAddress)

	 // get real converter (smart token owner)
	 converterAddress = await smartTokenContract.methods.owner().call()
       smartTokenSymbol = await smartTokenContract.methods.symbol().call()

       console.log(tokenAddress, symbol, converterAddress, smartTokenAddress, smartTokenSymbol)

       obj = { tokenAddress, symbol, converterAddress, smartTokenAddress, smartTokenSymbol}
       tokenInfo.push(obj)
       symbolArray.push(symbol)
       }catch(err){
	 console.log("NO STANDARD_____", tokenAddress)
       }
    }
    saveToJson(tokenInfo)
}