BEIJING, Aug. 5 -- The majority of Chinese consumers' complaints about goods and services they bought in the first half of this year were based on the products' poor quality, the China Consumers' Association (CCA) has found.

In its half-year report released on Tuesday, the CCA said consumer associations across the country investigated 327,564 complaints in the January-June period and helped consumers get refunds totaling 677.04 million yuan (110 million U.S. dollars).

Quality problems triggered 43.2 percent of the complaints, while dissatisfaction over after-sales service was behind 20.4 percent of them, according to the CCA.

Over half of the complaints were about consumer goods, with mobile phones, clothes, cars and auto parts, footwear and food among the goods most frequently complained about.