Call us or send us letter right now, you could get free material and probational samples.
立刻打电话或来函即可得到免费资料和试用样品。
If you have never make big mistake on probational duration, you may become an official member.
经过试用期之后，若无重大违失，则可受认可为正式会员。
If you have never make big mistake on probational duration, you may become an official member.
经过试用期之后，若无重大违失，则可受认可为正式会员。
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