“[I]f an additional 25% duty were imposed, it is virtually certain that a customer looking to purchase a foam mattress online would find that a mattress that would have cost $700 prior to the imposition of the duties would now cost $875… U.S. companies like us, are growing and hiring in the United States because we and our retail partners are delivering value and convenience to American consumers in a rapidly growing market. Additional duties would inhibit that growth and impose an unwarranted burden on what should be a success story for the U.S. economy.”