太多"and",修飾下唔該!

I am also confident in discussing terms with them about payment, packing, delivery, insurance, handling their production and shipment status inquiries.

I am also confident in discussing terms with them about payment, packing, delivery, and insurance as well as handling inquiries regarding their production and shipment status.

我認為所有 "AND” 都不能刪除。 句中的 "PAYMENT”, "PACKING”, "DELIVERY ” 和 "INSURANCE” 都是連接詞 "ABOUT” 的受事位 (objects) ，而 "INSURANCE” 是放在最後的位置，所以應該用 "AND” 連接 ( "DELIVERY” 後面的comma 應該刪去)。 至於 "HANDLING” 前面的 "AND” 是用來連接兩個句子的，這兩個句子是 " I AM ALSO CONFIDENT IN DISCUSSING TERMS .....” 和 " (I AM ALSO CONFIDENT IN) HANDLING THEIR ....”， 所以也不能省畧，最後， "production” 和 "shipment” 之間的 "and” 字也不可刪除，因為 "production” 和 "shipment status inquiries” 都是動詞 " (am) handling” 的兩個受事位 (objects) ， 所以需要用 "and” 字連結，因此在你提出的句子中，你祇須刪去 "delivery” 後面的 comma， 而其他都不用改。

How about this:

I am also confident in discussing terms with them about packing and packaging, delivery, payment, insurance, and handling their production as well as inquires regarding shipment status.

I am also confident in discussing terms with them about payment, packing, delivery, insurance, production handling, and shipment