While manufacturing machine and equipment in A.S. Watson's Co. in Ma Tau Kok was highly automated, inspection of defective bottles was performed by human labors as an important part of the production line.馬頭角屈臣氏汽水廠生產過程雖全用機器，但檢測水樽是否破損的工序，仍賴人手進行，也是整個生產線重要部份之一。