is there any particular company in holland that produces this?
Yes, the Holland Sweetener Company.
Aspartame
A joint venture of DSM and Tosoh, the Holland Sweetener Company manufactured aspartame using the enzymatic process developed by Toyo Soda (Tosoh) and sold as the brand Sanecta. 
when did taylor swift became a pop singer In the year 2004, at the age of 14. what was her debut album called? "Taylor Swift" when was it released? October 24, 2006 what are some products she has endorsed? Diet Coke, Keds sneakers, Instax camera, to name a few. what is the first product mentioned here? It is a sugar-free and no-calorie soft drink. which company manufactures it? The Coca-Cola Company what are the ingredients in this drink? One of the ingredient was aspartame. what exactly is this ingredient? It is an artificial non-saccharide sweetener 200 times sweeter than sucrose. is it in any way harmful to humans? It has been deemed safe for human consumption by over 100 regulatory agencies in their respective countries.
wiki:1620596
Aspartame [SEP] Holland Sweetener Company
A joint venture of DSM and Tosoh, the Holland Sweetener Company manufactured aspartame using the enzymatic process developed by Toyo Soda (Tosoh) and sold as the brand Sanecta. Additionally, they developed a combination aspartame-acesulfame salt under the brand name Twinsweet. They left the sweetener industry in late 2006, because "global aspartame markets are facing structural oversupply, which has caused worldwide strong price erosion over the last five years", making the business "persistently unprofitable".