Even in China, only very few very amateur players use this grade of knockoff, and it's not even as good as the cheaper 博芳碳.
As a matter of fact, YINHE's products with a better reputation are the following, YINHANG similar to the softer Viscaria, Pyon Song-Gyong similar to the harder LONG 5X, and a nice RI JONG SIK, like Lin gaoyuan ALC which is more suitable for the harder rubbers.