OCH involves trade between China and worldwide in wide range products, includes art, oil painting, home application, construction material, toy, electronic, chemical products, and commodity etc. Also, OCH has provided any brand of machinery or equipment used in construction or other purposes, such as CAT, Bobcat, Allison etc. Business service includes information collection in CHina, marketing research, business travel arrangement, exhibition, project introduction, investment opportunity and seeking potential business partners in CHina etc.