Thanks to the Brooklyn-based Wonton Food company, China will soon have fortune cookies.

Until now the cookies, which cap off just about every meal served in most of America's 30,000 Chinese restaurants, have been unknown and gone untasted in China. Like hot dogs, pizza and more particularly, chop suey, they are essentially American concoctions.

But Wonton Foods, which produces a million fortune cookies a day in New York, has decided that the time is propitious to go east with the fortune cookie. "We just signed a joint venture agreement with the Guangzhou Municipal Foodstuffs Machinery Corporation to build and operate a fortune cookie plant," said Donald H. Lau, the company's vice president. He said he expected production to begin in about eight months.

He sounded as pleased as a man, who, having cracked open a cookie, found a message saying, "Greater success is in the days ahead," this being just the kind of thing you want to read when you are establishing a beachhead in a market of more than a billion cookie-eating people.

Mr. Lau said he did not believe that the fortunes needed to be passed by Government or party censors. "Those days are over," he said. Still, he noted, in terms of style, the Chinese fortunes are more elliptical than the American variety, which essentially foretell good health, growing wisdom, increasing riches, much love and ever greater sexiness in a straight-forward manner.