BRUSSELS, Oct 19 (Reuters) - The following are mergers under...

BRUSSELS, Oct 19 (Reuters) - The following are mergers under review by the European Commission and a brief guide to the EU merger proces

APPROVALS AND WITHDRAWALS -- French energy company Engie ENGIE.PA and Caisse des Depots et Consignations to acquire joint control of a wind power producer (approved Oct. 18)

-- French car parts maker Valeo VLOF.PA to acquire German clutch maker FTE Automotive(approved Oct. 13)

NEW LISTINGS -- U.S. private equity firms Madison Dearborn Partners and HPS Investment Partners to jointly acquire private holding company Ardonagh Group, which owns insurance broker Towergate Insurance Ltd, and Nevada Investment Holdings 2 Ltd (notified Oct. 18/deadline Nov. 24/simplified)

-- Private equity firms CVC (CVC) and Blackstone BX.N to jointly acquire online payuments processing provider Paysafe Group PAYS.L (notified Oct. 16/deadline Nov. 22)

EXTENSIONS AND OTHER CHANGES -- Medical device maker Avantor, which is controlled by private equity firm New Mountain Capital, to acquire laboratory equipment distributor VWR VWR.O (notified Oct. 11/deadline Nov. 17/withdrawn Oct. 9)

FIRST-STAGE REVIEWS BY DEADLINE

OCT 18 -- German insurer Allianz ALVG.DE to acquire UK financial services group Liverpool Victoria Friendly Society Ltd's general insurance businesses (notified Sept. 13/deadline Oct. 18/simplified)

OCT 25 -- Jacobs Engineering Group to acquire technical consulting services provider CH2M Hill Companies (notified Sept. 20/deadline Oct. 25/simplified)

OCT 26 -- Luxembourg-based steelmaker ArcelorMittal MT.AS to acquire Italian steel plant (notified Sept. 21/deadline Oct. 26)

OCT 27 -- German chemicals company Evonik EVKn.DE and Dutch peer DSM DSMN.AS to set up a joint venture (notified Sept. 22/deadline Oct. 27/simplified)

OCT 30 -- British company CRH plc CRH.I to acquire XI (RMAT) Holdings GmbH, the German holding company of limestone producer Fels-Werke GmbH which is part of Xella International (notified Sept. 25/deadline Oct. 30)

OCT 31 -- Private equity firm Equistone Partners Europe SAS to acquire French furniture disbributor Groupe Bruneau (notified Sept. 26/deadline Oct. 31/simplified)

NOV 3 Private equity firm Leonard Green & Partners to acquire legal services provider CPA Global Group (notified Sept. 27/deadline Nov. 3/simplified)

NOV 7 -- Special purpose vehicle ShaMrock Wind to acquire 60 percent of Irish wind farm operator Evalair, which is jointly owned by Luricawne, Fixarra and Luricawne (notified Sept. 29/deadline Nov. 7/simplified)

NOV 8 -- Private equity firms Carlyle Group CG.O , CVC (CVC) and China Investment Corp to acquire joint control of French energy company Engie's ENGIE.PA holding company for oil and gas exploration and production business (notified Oct. 2/deadline Nov. 8/simplified)

-- Private equity-backed Neptune Oil & Gas to acquire majority stake in French utility Engie's ENGIE.PA exploration and production business (notified Oct.2/deadline Nov.8/simplified)

NOV 10 -- German auto components supplier Bosch and Chinese counterpart Hasco to acquire electric power steering products maker ASCN (notified Oct. 4/deadline Nov. 10/simplified)

NOV 14 -- French insurer Axa AXAF.PA and Dutch property developer Unibail-Rodamco UNBP.AS to jointly acquire a shopping centre in Leipzig, Germany (notified Oct. 6/deadline Nov. 14)

NOV 15 -- France's CNP Assurances, Australian investment bank Macquarie and French insurer Predica, which is a unit of French bank Credit Agricole CAGR.PA , to acquire joint control of French petroleum product storage company Pisto (notified Oct. 9/deadline Nov. 15/simplified)

-- China's Legend Holdings 3396.HK to acquire 90 percent of Banque Internationale a Luxembourg (BIL) from Qatari investment vehicle Precision Capital (notified Oct. 9/deadline Nov. 15/simplified)

Nov 16 -- Public pension fund provider ATP and Canadian teachers' pension fund OTPP to jointly acquire Danish airport operator Copenhagen airports (notified Oct. 10/deadline Nov. 16/simplified)

-- West Midland Holdings Ltd, which is a joint venture between Dutch rail operator Abellio Transport Holding BV, East Japan Railway Co and Mitsui Co 8031.T , to acquire the West Midlands franchise from London & Birmingham Railway Ltd (notified Oct. 10/deadline Nov. 16/simplified)

NOV 20 -- U.S. private equity firm Hellman & Friedman to acquire Danish payments provider Nets NETS.CO (notified Oct. 12/deadline Nov. 20/simplified)

NOV 21 -- Private equity firm Apollo Management to acquire insurer Aegon Ireland (notified Oct. 13/deadline Nov. 21/simplified)

NOV 22 -- Techno Polymer Co. Ltd, a unit of Japanese chemicals company JSR Corp 4185.T , and UMG ABS Ltd, which is jointly controlled by Mitsubishi Chemical Corporation and Ube Industries Ltd, to merge their resin businesses (notified Oct. 16/deadline Nov. 22/simplified)

FEB 26 -- Italian eyewear maker Luxottica LUX.MI and French lens manufacturer Essilor ESSI.PA to merge (notified Aug. 22/deadline extended to Feb. 26 from Feb. 12 after the companies asked for more time)

MARCH 5 -- U.S. specialty material company Celanese CE.N and private equity firm Blackstone BX.N to combine their cellulose acetate tow units under a new joint venture (notified Sept. 9/deadline extended to March 5 from Oct. 17 after the European Commission opened an in-depth investigation)

SUSPENDED -- German industrial group Bayer BAYGn.DE to acquire U.S. seeds company Monsanto MON.N (notified June 30/deadline suspended on Sept. 21)

-- U.S. smartphone chipmaker Qualcomm QCOM.O to acquire Dutch company NXP Semiconductors NV NXPI.O (notified April 28/deadline suspended from Aug. 17/concessions offered Oct. 5)

GUIDE TO EU MERGER PROCESS DEADLINES: The European Commission has 25 working days after a deal is filed for a first-stage review. It may extend that by 10 working days to 35 working days, to consider either a company's proposed remedies or an EU member state's request to handle the case.

Most mergers win approval but occasionally the Commission opens a detailed second-stage investigation for up to 90 additional working days, which it may extend to 105 working days.

SIMPLIFIED: Under the simplified procedure, the Commission announces the clearance of uncontroversial first-stage mergers without giving any reason for its decision. Cases may be reclassified as non-simplified - that is, ordinary first-stage reviews - until they are approved.