From the GSW Website, here are the use and application of these new items. I used them on my review build of a Supermarine Spitfire and you can see the results.

GSW Decal Fixer helps the application of decals onto surfaces of models, miniatures and dioramas. The GSW Decal Fixer prepares the surface with special agents that soften the solvents of modern paints making decals more resistant and glue stronger. In addition, the decal fixer makes the decal more flexible and increases the adherence, preventing the silvering effect.

Decal Fixer

Content: 1x 17ml bottle

Introduction

The M59 is a heavy towed howitzer from the World War II era with its origins in the United States. Initially developed after World War I as the 155mm Gun M1 due to the limited heavy gun capabilities identified in the U.S., it underwent redesignation as the M59 after World War II. However, it continues to be commonly referred to by its popular nickname, "Long Tom." Functioning as a gun, the M59 was specifically designed for a long-range and flat trajectory, distinguishing it from traditional howitzers that typically have shorter ranges and much higher trajectories.

AFV Club is a well-known plastic model company based in Taiwan that specializes in producing high-quality scale model kits, particularly focusing on armored fighting vehicles (AFVs) and military-related subjects. The company has gained a reputation for its attention to detail, accuracy, and innovative model kits that cater to the needs of both casual model builders and serious hobbyists.