ZK International’s Subsidiary, xSigma Eneters Non-Fungible-Token Market Projected at $1.3 billion in 2021 as it Announces the Launch of its “NFT” Platform on Ethereum and Polkadot Blockchains 7 min read Polkadot ZK International’s Subsidiary, xSigma Eneters Non-Fungible-Token Market Projected at $1.3 billion in 2021 as it Announces the Launch of its “NFT” Platform on Ethereum and Polkadot Blockchains wolf2021 15. March 2021 [ad_1] WENZHOU, China, March 15, 2021 /PRNewswire/ — ZK International Group Co., Ltd. (Nasdaq: ZKIN) (“ZKIN”, “ZK International”...Read More