contribution to profit formula Microsoft's Surface Pro, Surface Laptop, Surface Book and Surface Studio are the main products of Microsoft's Surface series, but there is a clear difference in the share of the devices. The Surface Pro products account for the highest share (79.9%), the Surface Book (7.5%), Surface Laptop (2.0%), and Surface Studio (0.2%). If the railings of the balcony and iron decks are wider than 4 inches, you need to find a way to block and secure them. They can be a danger to your child. Attaching a sheet of Plexiglas, plastic, or any other such materials are able to keep your children safe. There are some parents who make mistake of since the railings with cloth. That's never a good idea. Your child can lift the cloth, after all. You just need to make use of a hard material. A transparent material like Plexiglas wouldn't basically be safe, and also look great. Frances O 'grady, chief secretary of the UK federation of industry and industry, said: "this suggests that brexit uncertainty has damaged the household budget. Work and living standards must be a priority in determining the best choice for brexit. The government should maintain a single market membership at the negotiating table. "