收养16 years old boy，just 失去亲父, how to申请?

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收养16 years old boy，just 失去亲父, how to申请?收养16 years old boy，just 失去亲父, how to申请到加拿大? 母亲失去监护权，以后不可能申请到加拿大探亲的机会。

' W, ^5 f% Z) U% e" S; ]: }' ZI have one girl and one boy myself.
( l5 v& x3 {$ l# D% I
) k! q, m5 H* d0 L  n; _! x+ yAny one might know how to do this or help? How to do the paper work in China?

Thanks first.