BEIJING - Chinese courier companies might face fines of up to 50,000 yuan (around $7,814) and license revocation for leaking customers' personal information, according to draft regulations unveiled on Monday.

Express companies should regularly destroy waybills and are prohibited from selling, leaking or illegally providing customers' personal information, the draft rules stipulate.

The draft will be posted online to solicit public opinion until Dec 15, the Legislative Affairs Office of the State Council said.

This is good news for express delivery customers who worry that a new real name policy for parcels might be a privacy threat.

Personal identifications and contact details have been required in order to send parcels since Nov 1. The decision was announced after letter bombs killed at least seven people and injured dozens more on Sept 30 and Oct 1 in Liucheng county of the Guangxi Zhuang autonomous region.

Under the draft rules, items that could endanger national security, social stability and public interest are banned from delivery, while delivery service staff are required to check goods before packaging.

The draft also addresses rough handling of parcels, which has led to a number of customer complaints.

Couriers who toss or step on parcels, or otherwise mishandle packages in a way that causes damage, could face fines up to 50,000 yuan as well as suspension of company operations.

Despite a slowing economy, courier services have grown steadily in China as online shopping has gained popularity.

The sector has registered annual growth of over 50 percent for the past five years, and almost 20 billion parcels are expected to be delivered in 2015, figures from the State Post Bureau show.

On average, each Chinese person received more than 10 parcels last year, though only half of the country is covered by delivery networks.