m: 0086 186 0111 9825
t: 0086 10 6434 4539 ext 0
f: 0086 10 6434 4640
no.100 caochangdi cun, chaoyang district, beijing, prc 100015
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m: 0086 186 0111 9825
t: 0086 10 6434 4539 ext 0
f: 0086 10 6434 4640
no.100 caochangdi cun, chaoyang district, beijing, prc 100015