Complex sentence: In 1918, dye-producer AB Svensk färgämnesindustri (ASF) bought Astra, which had plans to create a large Swedish chemical group rivalling those in continental Europe.
Split into simpler sentences: In 1918, dye-producer AB Svensk färgämnesindustri (ASF) bought Astra. ASF had plans to create a large Swedish chemical group rivalling those in continental Europe.