Did Kim sell fake goods to Putin?

Vladimir Putin-Kim Jong Weapons Deal: Who doesn't know about the friendship between North Korean dictator Kim Jong Un and Russian President Vladimir Putin? Last month, Putin also visited North Korea. So, pictures of great bonding between the two came out. Many big deals were made between the two friends and many arms deals were also made. The question is, is the quality of the weapons that Kim Jong is selling to his friend Putin good?