1. supply all the legal building - sale documents, take on the intermediation between party b and government on sale, and guarantee the quality and deadline of the buildings. 2. supply the publicizing expense to the houses - sale department every month, and take on the expense for the publicizing of newspaper, magazine and sociality. 3. supply a decorated houses - sale apartment and communication and work equipment ( including a tv set, air - condition, an electrograph, desks and chairs and so on ), the phone bill should be paid by party b and the water rate and the electricity bill are supported by party a. 4. send to charge the fund and approve the houses - sale contract. 5. party a has the right to check and guide the work of party b regularly, but is refused to interfere the inner operation and arrangement of party b. party a has the right to come up with the logical advice regularly and duly to the houses - sale operation. 6. party a has obligation to keep the contract secret in case of the negative effect to the sales. 7. party a should pay party b commission and bonus on time. if it fails, party a should pay the late fee as the 0. 1 % according to the time and defective amounts. 8. party a should help the consumers to transact the bank mortgage and housing property right, take on composing and settling the argument between the consumers and company in law. 9. if the market conditions have changed, the adjustment should be set up by both parties through consultation. 1. according to the operation of the construction ( party a has the layout license and land use and construction license ), party b should carry out the propaganda and activity to publicize the items and prepare for selling. while party a gets the sale license, party b should start the work as planned. 2. while the sales begin, party b should finish _ _ _ _ % of the number of the buildings in first phase in 2 months, _ _ _ _ _ _ % in 6 months, _ _ _ _ _ % in 12 months, and _ _ _ _ % in 14 months. the second phase for sale should be started at the same time ( sales cycle is counted according to the time, area and price, and the other contract should be signed ). the sales performance does not include the houses which party a uses for debt of construction team. party b should not pick up the commission while the houses is team