I want to make a business trip to china Need guide

You need to apply for the M type one. Apart from your passport, filled application forms and photo, you need to provide an invitation letter from the duly authorized unit, an invitation letter from the business partners in PRC, guarantee letters from your employer, tax bill, business of your employer's company, bank balances in recent six months, and round-trip air tickets and hotel bookings in PRC (if you come to PRC for the first time).