CJRB is a sub-division of Artisan Cutlery a Chinese knife brand. It seems it is quite popular for Chinese companies to have multiple brands to offer knives at different price points. 

Specifications: 

• Blade Length: 3.11″ 
• Handle Length: 4.19″ 
• Overall Length: 7.30″ 
• Cutting Edge: 2.90″ 
• Blade Width: 1.00″ 
• Weight: 3.60 oz. 
• Blade Style: Drop Point 
• Blade Grind: Flat 
• Finish: Stonewash 
• Edge Type: Plain Blade 
• Thickness: 2.8mm 
• Blade Material: AR-RPM9 

AR-RPM9 steel is proprietary stainless steel manufactured by Artisan Cutlery, formulated following the powder metallurgy process, and is categorized under their budget-priced steels. The 9 in the naming of AR-RPM9 steel is intended to signify the elements present in its alloy composition. 

AR-RMP9 steel is basically equivalent to Chinese 9Cr18MoV steel and German 1.4112 stainless steel. They are both high carbon and chromium steels, with a hardness of 58-60 HRC. 

• Handle Material: Stainless Steel 
• Pocket Clip: Tip-Up 
• Knife Type: Thumb Stud 
• Pivot Type: Bearings 
• Lock Type: Button Lock