我采取的办法是：随行就市购买。不给别人加工，只给您加工。尽力维持每月给您4-5万的数量。
The method I adopted is like this:sale of products according to market demand and price changes. Carry on the machining(机械零部件）/processing(食品、化工、医药）for you instead of others. We(I) try to maintain 40- 50 thousands products for you per month.
随行就市sale of products according to market demand and price changes.