Question: What is the name of the chartered trade company in which Jan Valckenburgh served as an assistant trader?

Context paragraphs:
Jan Valckenburgh: Jan Valckenburgh (1623 – 8 July 1667) was a civil servant of the Dutch West India Company.  Valckenburgh began as a simple assistant-trader, but managed to make career up to one of the highest ranks, that of Director-General of the Dutch Gold Coast, twice.

Baltona: Baltona (full: Baltona Foreign Trade Company Spółka Akcyjna, former Baltona - zaopatrywanie statków) is an enterprise created in 1946 in Poland.  Nationalized and subordinated to the Polish Communist Ministry of Foreign Trade in 1950, it was tasked with resupplying Polish ships, planes, diplomatic posts, airports, seaports, border crossings, and even scientific expeditions.  The company grew and became a large export-import company during the 1970s and 1980s.  During the time of the People's Republic of Poland, it was one of the few companies offering Western goods to Polish consumers for foreign currency.  At the height of its popularity during the mid-1980s, Baltona operated nearly 250 stores and had over 2,000 employees.  In 1984 it was transformed into a joint stock company (Polish: "spółka akcyjna" or S.A.).

Dennis P.: Dennis P. (or "Denis") is the name police used to identify the 25-year-old man and former employee Dennis Phrommer of diamond trade company Gassan Diamonds in Amsterdam who committed a spectacular theft of 8137 diamonds, together 3422.9 carat , and other jewelry, with a value of €10 million, from his employer on 4 August 2001.  At the time it was the largest diamond theft in the history of the Netherlands.  (In 2005 there was one on Amsterdam Schiphol Airport for an even larger value, 150 million euro, see also February 25, 2005.)

General Trade Company: The General Trade Company (Danish: "Det almindelige Handelskompagni" ) was a Dano-Norwegian trading company charged with administering the realm's settlements and trade in Greenland.  The company managed the government of Greenland from 1749 until its bankruptcy in 1774.

Trade as One: Trade as One is a Fair Trade company founded in 2006 by Nathan and Catherine George.  The company’s mission is to break cycles of poverty and dependency in the developing world by promoting sustainable businesses.  Trade as One does this by purchasing and selling fair trade products from more than 30 partnered producers via online and event sales throughout the USA.  In 2010 the company opened a retail store.  Trade as One also advocates for and educates about fair trade through large events, often with churches, and also via webinars.  The company is a certified member of the Fair Trade Federation and each of its partnered producers adheres to Fair Trade principles.

Manitoba Pool Elevators: Manitoba Pool Elevators was a grain trade company founded in 1924.  It became a subsidiary of the Saskatchewan Wheat Pool until November 1932, when the Pool declared bankruptcy.  In 1998 Alberta Wheat Pool and Manitoba Pool Elevators merged to form Agricore Cooperative Limited.  In 2001, United Grain Growers combined its business operations with Agricore Cooperative Ltd. and carried on business as Agricore United, a publicly traded company, no longer a farmer-owned cooperative.  In 2007, Agricore United was taken over by the Saskatchewan Wheat Pool, another publicly traded company.  The merged corporation was renamed Viterra.

Ramsay Crooks: Ramsay Crooks (2 January 1787 – 6 June 1859) immigrated to Canada from Greenock in Scotland.  He was the son of William Crooks and Margaret Ramsay.  In 1803 he worked in a trading post on the Great Lakes.  He helped W. Price Hunt to organize and lead an overland trip to Astoria in the Oregon Country for John Jacob Astor in 1809 through 1813, as a partner in the Pacific Fur Company.  He became general manager of the American Fur Company in 1817 and was president of the company from 1834–1859.  While traveling for the fur trade company he dealt with many Native American tribes.  He married Abanokue, the daughter of an Ojibwa Chieftain.  They had a daughter, Hester Crooks.  Abanokue died around 1825.  Crooks then married Emilie Pratte, they had nine children together.  Emily, Marguerite, Virgina, Ramsey, Bernard, William, Sylvester, Charles and Julia.  He spent his final years in New York.

Aras Green Economic Dawn: Aras Green Economic Dawn (abbreviated AGED or Aras GED) is a private consulting and trade company based in Aras, Iran.  The company has a technocratic background with the slogan "Innovation Business, Challenge Solution."  The notability of the company comes from its trade and management of commercial genetically modified forests in Iran and for commercializing afforestation in Iran.

Dutch West India Company: Dutch West India Company (Dutch: "Geoctroyeerde Westindische Compagnie" , ] or Dutch: GWIC ; English: Chartered West India Company ) was a chartered company (known as the "WIC") of Dutch merchants as well as foreign investors.  Among its founders was Willem Usselincx (1567–1647).  On June 3, 1621, it was granted a for a trade monopoly in the West Indies (meaning the Caribbean) by the Republic of the Seven United Netherlands and given jurisdiction over Dutch participation in the Atlantic slave trade, Brazil, the Caribbean, and North America.  The area where the company could operate consisted of West Africa (between the Tropic of Cancer and the Cape of Good Hope) and the Americas, which included the Pacific Ocean and the eastern part of New Guinea.  The intended purpose of the charter was to eliminate competition, particularly Spanish or Portuguese, between the various trading posts established by the merchants.  The company became instrumental in the largely ephemeral Dutch colonization of the Americas in the seventeenth century.  From 1624-1654, the WIC held Portuguese territory in northeast Brazil, but they were ousted from Dutch Brazil following fierce resistance.

Kompania Handlowa Polska: Kompania Handlowa Polska (English: Trade Company Poland), also known as Black Sea Trade Company (Kompania Handlu Czarnomorskiego), Black Sea Company (Kompania Czarnomorska), and Kherson Company (Kompania Chersonska) was a Joint-stock company which existed in the Polish–Lithuanian Commonwealth in 1783–1793.  It controlled international trade of the Commonwealth via the Black Sea ports.  Kompania Handlowa Polska was formally opened by Antoni Protazy Potocki on March 18, 1783 in Winnica, Poland (now: Vinnytsia, Ukraine).

Supporting paragraphs: Jan Valckenburgh Dutch West India Company
Answer: Dutch West India Company