The guy you want to mention in your email is JIMMY TSENG, he's legal counsel and head of Stannic Motor Spares. They are the parent company of Kazuma.
Sunny@kazuma.com is Sunny Chang - he's VP of sales orders...you can get contact information from him. (Don't tell him I gave you his personal email)
Drop the name JIMMY TSENG in the email, and you might get a more efficient response.
Be sure to use the keywords 'defect' 'fuel' 'potential death and disfigurement' 'negligence' and 'lawsuit' in your email.
That should get their attention.
Stannic Motor Spares Engineering Ltd
Country/Territory: Taiwan
Address: No.3, Alley 16, Jih Hsing Lane, Chung Hsing Road Sec2, TA LI, TW, Taiwan
If all else fails, call this number Tel:86-577-86763793 (they're on Taiwan time) and ask for an english speaking representative.