The Pealership in Shanghai have very (very) high cleanness standards. Tools, garage, docs, computers, all is surgically cleaned regularly. I know, I have the privilege to know someone there that allows me to visually assist the mechanic when my car is on their lift. Floors are impeccable and cleaned every 15min on average. Spotless clean and professional.
Thinking of it that might be the main factor why one left his messy and blobby brake job in this customer's wheel.... instead of onto his nice white/red floor area