(Yicai Global) Oct. 26 -- Beijing has issued a policy outlining 12 industry "don'ts" to crack down on price manipulation in China's booming delivery sector. The document marks the first guidelines distributed to the nation's courier companies.

Firms should adopt market-regulated pricing, the document states, meaning prices must be set through fair market competition, displayed clearly and consistent nationwide, the Beijing News reported on Oct. 25.

There are 12 activities prohibited by the guidelines:

Not clearly displaying prices

Charging hidden fees

Charging different prices for the same service

Attempting to obscure conditions of price promotion activities

Conducting false advertising

Conducting misleading advertising

Illegally raising prices

Colluding to raise prices

Monopolizing prices

Excluding or restricting price competition

Underselling

Breaking the law.