Parcel delivery firm Yamato Holdings Co. and China Post, China's biggest distributor, will form an alliance ahead of the launch of a new shipping service in April catering to online shoppers, Yamato sources said Monday.

Yamato Global Logistics Japan Co., a Yamato group firm that offers logistic services to corporate customers, will start the service to provide business opportunities to Japanese Internet retailers.

About 150 Japanese companies are expected to use the Japan-China service in its first business year, the sources said.

Using Yamato's delivery network, packages will be collected from Japanese retailers and sent to Shanghai through Haneda International Airport in Tokyo. China Post will then ship the products throughout China. The whole delivery process will take about three to five days, according to the sources.

Shipping fees will be set at about ¥2,000 for packages up to 1 kg and about ¥3,500 for those weighing up to 2 kg. Japanese retailers will pay the fee to Yamato, and it will be then added to the product prices.