Dec 28 (Reuters) - Sino Gas & Energy Holdings Ltd SEH.AX
* announce increase in agreed pricing for gas sold from sanjiaobei psc
* Agreed natural gas price for gas sold from sanjiaobei psc has increased to rmb1.79/cubic meter
* Gross production from two facilities has increased to approximately 21 million standard cubic feet per day
* sino gas anticipates production facilities to operate within range 20-25 mmscf/d Source text for Eikon: ID:nASX8BW02R Further company coverage: SEH.AX