also: せいぞうば
Construction of the new manufacturing plant will start next month.
工場 is the most common word for 'factory' in everyday Japanese. 製造場 is more technical and emphasizes the manufacturing aspect.
Standard kanji spelling. The reading せいぞうじょう is the most common pronunciation.
Alternate reading せいぞうば is also used, though less common than せいぞうじょう.
Compound of 製造 (manufacture) and 場 (place). The reading じょう is the standard on'yomi for 場 in compounds, while ば is a kun'yomi variant sometimes used for location nouns.