hi planning to visit china on business in march i am from trinidad what visa should i apply for

You should apply for a M type from the Chinese embassy in Trinidad and Tobago. It is located at 39 ALEXANDRA STREET，ST. CLAIR，PORT OF SPAIN. Apart from your passport, completed application form and a passport size photo, you should provide an invitation letter from your Chinese partner. The invitation letter or confirmation letter of duly authorized Chinese unit might be required too.