Since your liquid is very dilute and not suitable for using a pump, we recommend you to use spray, You insist on using the pump, you flowed the liquid into the lid, accelerating the dissolution of the glue and causing the lid to separate. Oil products lubricated the separation of the lid. If there was no liquid flow in, would the lid detach for no reason? This is caused by human factors. this is your first time using this new bottle shape and pump head. As you mentioned, it is different from your previous bottle and pump head, so you cannot assume that the new bottle with pump is also suitable for your product based on your previous judgment, right? You have been using it for many years, but you are using a different product from ours. Secondly, in express part, we also sent you a sample of one bottle. Should you test it after receiving it? If it is not suitable for your product, we can replace it in a timely manner,right?