1.The loading and unloading for several units would end some scratches on the side rails. Also roller and fixing necessary for several units loading. 2.All designs and dimension customized. Chain gap 8mm and quicklash measurements done as required. The buyer gave many designs and dimensions first day and changed his mind next day. Non stopping changes can not be without delay. 3.Never been rude to buyer. Not only treated dinners, have gave buyer driving or driving for his business 6 times more than 2000km. Gave entertainment in KTV. Transfered buyer CNY for emergency. Mailed his sample to Irap. Paid hotels twice. Helped buyer to buy drill, bolts, aluminum windows, scuba equipment, lights, etc. Buyer takes no to free parts and unreasonable requirements as rude. 4.Buyer asked many shipping options and choose the cheapest. And he ended not happy with the period. 5.The buyer want to have monopoly on the market. He want to sell himself alone.