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A link to such an order form may look like this:
https://secure.affilibank.de/sebi/index?product=13335&gs_code=examplecouponliza-he/start/product/19215/type/tst/rid/671411963/new/1/
The advantage is, that you will receive fewer customer inquiries by customers who have forgotten to redeem the coupon code in the order form.
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