what should i do to apply my China work visa in Thailand?

Sir i work in china as the regional manager in a company called CAMDA GENERATORS in china, chinese law every worker need work permit so my company and the authorities in china gave me all the documents for my Z- VISA but am facing problem in obtaining the visa in china embassy in thailand what should i do? i want to see you in person, for my company ask me to see ambassador MR GUAN MU for any assistance how can i see him? to come to the embassy on appointment or without appointment? my company is in DONGGUAN CITY in GUANGDONG PROVINCE now the leading company in biomass and power generators in china,