WEEX Exchange said it has opened zero-fee trading for PREDIX (PDX), Uniswap (UNI) and NEAR Protocol (NEAR), according to an Aug. 5 announcement cited by ChainCatcher. The platform is also offering a 20,000 USDT newcomer-exclusive airdrop tied to the campaign. The promotion runs from Aug. 4 at 17:00 to Aug. 11 at 17:00, UTC+8. No other terms were disclosed in the brief notice.