I'd like to translate "样品费用可从下次订购总额扣除"
my version is
[The sample fee can be deducted to the next order.]
No idea if it's right...
另外在价格表中，要添加"样品费用扣除额"
is that [Deduction from sample fee] ?
or [ Deductible amount from sample fee] ?
Please correct my poor english translaton, thx alot!!