I am using huobi in for steem and hive storage.
You can use my referral link to sign up.
Other coins like eth and btc, I hold them in ledger nano hardware wallet.
https://www.huobi.ge/en-us/topic/double-reward/?invite_code=kmw43223&t=1634277529630
Check out Coinhako - The platform to buy, sell and store your crypto assets.
LARRY_144692
https://www.coinhako.com/affiliations/sign_up/LARRY_144692
For selling for SGD, use coinhako