They are the HG series and I have add a Pearl surface coating on the Gundam and Zaku. It is very beautiful under the sunlight~
This model is the product in 80s. Since the technology level is lower than nowadays, the movement of the joints are limited and instant glue is required during assembling...it is very difficult for me becoz I always play HG or MG before...
Since this mobile suit is used in desert, I have added a semi-gloss coating to enhance the real feeling. I have also sprayed Dark-yellow in the tank part (act as the Germany tank in WWII). Moreover, I have added aluminium coating in some small parts to make the model look like more detail.