Sensitive goods are recommended to be mailed by a professional international express agency for sensitive goods, such as cross-border logistics to the sea.
The DHL/FedEx route operated by the company can send articles containing liquids abroad without providing any test certificates and materials, and it can basically arrive in 3-5 days, which is very fast.
Author of this answer: Xianghai Cross-border Logistics (Zhihu, Taobao platform of the same name), specializing in domestic transshipment and overseas express delivery of sensitive goods.