Did I translate correctly?
在有过去十四年的卖方研究中积累了丰富的公司十几年的研究经验-In the past 14 years of sell-side research has amassed a wealth of research experience ten-some years.

Question

Answer

In the past 14 years of sell-side research has amassed a wealth of research experience ten-some years.
（凭借）在过去十四年的卖方研究，（而）积累了超过十年的丰富研究经验。

Answer

在过去十四年的卖方研究中积累了十几年丰富的公司研究经验