Is the air tofu in Shaoguan a pyramid scheme?

Shaoguan's air tofu is not a pyramid scheme. Shaoguan's air tofu is a project operated by Shaoguan Yongxiang Bean Products Co., Ltd., and it has obtained the certificates of invention patent, utility model patent, design patent and copyright registration of air tofu, as well as the certificates and relevant reports of the national testing department, so Shaoguan's air tofu is not a pyramid scheme.