Original sentence: However, due to delays of developing the Sakhalin-III, the main supplier for the pipeline would most likely be the ExxonMobil-led Sakhalin-I project.However, no contract has been signed
Edited sentence: Due to delays of developing the Sakhalin-III, the main supplier for the pipeline will most likely be the ExxonMobil-led Sakhalin-I project, but no contract has been signed to date