1) My name is xxxx
2) I am graduated from xxxxx (e.g. college) since 19xx.
3) Then I have worked in xxxxxx (working field / large company) as a shipping clerk, I have handled the shipping jobs like LC document , xxxxxxxx etc.
4) As I had xx years experience in xx (e.g garment, electronics) industry, I am confident that I could apply my knowledge and experience to handle the shipping duties in your well established company.