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。

7 i% L  ]7 \; N: Z7 m7 _4 k) qI have one girl and one boy myself.

$ |5 F0 j7 C% K( B$ R- J: A5 BAny one might know how to do this or help? How to do the paper work in China?

Thanks first.