Found this Instant Vegetarian Lo Mai Kai at Giant Hypermarket @ Tampines. It was a while ago and the lost the product name. It came in 2 in a pack near the vegetarian frozen section cost less than S$4 per pack.
What you need to do it just steam it and it is ready. It is convenient, taste flavourful and if less oil is use, it will be great.
What I love about this product is that it was not using any plastic container.