Besides efforts to promote sales by means of association with cultural and historical heritage, CT Jiangxi makes use of rapidly developing modern telecommunication technology, namely mobile internet, by introducing marketing on the WeChat app system, marketing within social circles, and with two-dimensional codes to publicize its brands and improve its corporate image, which is yet another major characteristic of the companys efforts to present new products to the market, and which means a great new change
However, these sales often occur in a legal gray area, and the quality and safety of the products cannot be guaranteed

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HCN) as the only covariate in our GEE models
Funding No external funding was used in the preparation of this manuscript