thank you very much sir for such as a message which inspired me to still use my purchased yinhe blade...anyway, i was just in for that blade because of the price which is cheaper than the rest of the blades manufactured out there...another one is it's ittf approved blade, i'm not using any blade that is not approved by the ittf...many bats here in my country sold in some stores are not approved, lets say they are not from known manufacturers and does not have any ittf approval...
ITTF has no specific rule on blades dum dum. Use Yinhe, be part of the junk, no one cares!