Translate from (Mandarin/English) to Japanese

We have a site to translate to Japanese, need someone who is fluent in (english or mandarin) preferably Mandarin and native Japanese.

We want the translation only within the quote after ':' ,
below is a couple example,
There is about 1400 lines total of word/phrases/sentences to translate.

member_slot:'Number of users', -> translate 'Number of users'
member_slot_price_desc: 'Additional slots are $9 per month.', -> translate 'Additional slots are $9 per month'
member_slot_increase: 'Increase user slots',
member_slot_increase_header: 'Add slots',
member_slot_price_tooltip: 'Price will be reflected starting your next monthly subscription invoice',