Check out suppliers of food, delivery giants say

Food delivery giants Ele.me and Meituan-Dianping have asked restaurants using their platforms to examine their suppliers and report any adulterated or contaminated food to the food and drug authorities.

The statements, published on the companies' social media accounts on Friday, followed the posting of a video on social media that showed unhygienic conditions and substandard food in a factory making seasoning packets and packaged meat in Anhui province.

Ele.me and Meituan-Dianping said they have removed restaurants that have used ingredients produced by the GangGang-Xiang food factory in Hefei, Anhui, from their online delivery platforms and halted delivery services.