noun
Abbreviation of 自動車工業 (automotive industry). Often appears in company names, such as 〇〇自工.
あの会社は「山田自工」という名前で、自動車部品を作っています。
That company is called 'Yamada Automotive Industry' and makes auto parts.
「自工」は「自動車工業」の略で、主に社名で見かけます。
'自工' is an abbreviation of '自動車工業' and is mainly seen in company names.