File:Paulus van Liender (1737-1791), Village View of Maartensdijk ... File:Paulus van Liender (1737-1791), Village View of Maartensdijk,1737 - GR2L is a Cleantech company specialising in the recovery, purification and recycle of purge gases used in the Photovoltaics, Microelectronics and the Material processing industry sectors. Its particular focus is on Photovoltaics where argon is used in large quantities during the. Important Notice to All Prospective RFBs. All tenders will close at 11:00 on the closing date as indicated in the RFB documents. Posted tenders must reach Tender Office before the closing date of the tender..