C2249 Maintaining

How could she not know what she had designed? Ding Yiyi was sure that she had made a mistake. Thinking back on every detail, she felt that it might be in the delivery process.

"Who was the person in charge of bringing the finished drafts to the factory that day?"

"It was me." Sophia stood up. "I took it to the factory. I went there in the afternoon. Because it was sealed, it was never opened