Twenty-three metric tons of delicious chocolate produced by Zhejiang ChocZero -- a company owned by the US-based chocolate brand ChocZero -- was recently delivered by the company's new plant in Zhuji in Zhejiang province.

ChocZero, founded in Los Angeles, produces one of the best-sold chocolates in the United States.

Its sales ranked it first among all sugar brands in the country on US e-commerce company Amazon last year, according to statistics from Amazon.

Enthusiasts say ChocZero chocolate appeals to consumers because it has no sugar content but has a sweet flavor -- thanks to a special technique developed by the group that extracts natural substances from Siraitia grosvenorii to produce the flavor.

As orders from other countries such as Australia and Japan expand, ChocZero decided to expand its production base, and according to the company, it chose China as a production center because of its huge market and low-cost logistics.

The company decided to invest $15 million in building a factory in Zhuji, after four months of surveys.

"We like the investment environment and sound government services here," said Zhou Zhongwei, president of Zhejiang ChocZero. 

Zhejiang ChocZero has established a food lab in Zhuji and launches a new product almost every half a month. In addition to non-sugar chocolate, the company also plans to develop other healthy food for children and the obese groups.

The company has hammered out a sales agreement with Alibaba, in order to expand into the Chinese market.