每次你下订单后我都会让生产部门多加上一部分厚度,这已经是极大挑战我们的成本了,目的就是希望货到你的仓库后厚度差的离谱.(你第二句话很反常啊,是不是说气话,工厂把你惹毛了?）
Everytime you make an order I would inform our manufacturing department to thick the product, which has been a great challenge to our cost. So I hope the product arriving your warehouse will differ a lot from your expectation.
The reason why the first products we delivered was 70mm thick is because there were a lot of orders and we missed your order with others'. So we just met our cost in that order. You should know 70mm is far more expensive than those 50mm ones.