回复：产品已经做好，现在我只是加上自己的品牌名称和包装盒子。如何与生产厂商洽？

Most of factories in China don't have good package designer. if you want to promote your brand, you are better get one designer by yourself. At least, you should have one "Sample"-- from store; anyhow, you have to have a clear idea, how your products will be. Also, you need "bar code", manual.
Package is VERY important for any new product. I suggest you should spend more time on it.