(Yicai Global) Sept. 6 -- A non-governmental organization has sued China's three biggest food delivery platforms, Meituan Dianping, Ele.me, and its recent acquisition target Baidu Waimai, for alleged environmental pollution.

China Chongqing Green Volunteer's Union, an environmental NGO, filed the lawsuit in Beijing, news outlet China Network reported on Sept. 5. The defendants are Baidu Waimai backer Beijing Xiaodu Information Technology Co., Ele.me owner Shanghai Rajax Information Technology Co. and Meituan's parent Beijing Sankuai Technology Co.

The three companies make up nearly 95 percent of China's take-out food delivery market.

CCGVU accuses them of failing to provide dishware selection functions in their apps leading to increased use of disposable receptacles, and therefore a huge waste of resources and environmental damage.

The No.4 Intermediate People's Court of Beijing has accepted the case and is carrying out further investigations.