let the real 6sigma stand up
let the real 6sigma stand up,it's an article about the six sigma ,pls check
and now i set up a 'QQ' group,
if you have some interest ,pls join in us ,the QQ GROUP NO is 48729927,TKS
and now i set up a 'QQ' group,
if you have some interest ,pls join in us ,the QQ GROUP NO is 48729927,TKS
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