My house doors and windows done by Reliance Home, good quality product and workmanship, although delivery may be late due to CNY ..but overall i am very satisfied with their after sales service, they respond the complaint within 3 working days, very impressed!

below is the link of products i purchased from Reliance Home:

Shower Screen : http://www.reliancehome.com/products/shower-screen/
Kitchen Door : http://www.reliancehome.com/door-type-malaysia/kitchen-door/
Skylight :http://www.reliancehome.com/products/skylight/

they do many glassworks and aluminum doors and windows, you can visit their homepage here at http://www.reliancehome.com

wish above info helps