Dear loyal SF customer,

If you have previously purchased SF series products, we would like to offer you an exclusive opportunity to upgrade to our G series. As a token of our appreciation, we are pleased to provide you with an extra 10% discount on your upgrade order. (This discount code cannot be combined with other discount codes)

To redeem your discount, please complete the form below and provide your purchase history. We will send you the discount code within 24 hours.

Thank you for your continued support.