price increase in CPL and nylon 6 chip market was hardly absorbed by nylon downstream sectors

When the first time Sinopec raised the CPL contract nomination by 300yuan/mt, downstream nylon textile filament plants did not follow up. Cloth sales was difficult and buyers put strong resistance toward price increase of NFY, and most NFY plants chose to take the higher cost themselves in order to keep their customers. However, when Sinopec raised the contract again by 500yuan/mt, it was beyond downstream tolerance, and NFY plants were forced to raise offers by 300-500yuan/mt. As could be expected, most cloth manufacturers did not follow up to restock goods, and only a few mills with good sales condition had moderately purchased. As a result, Frequent and significantly price increase in CPL and nylon 6 chip market was hardly absorbed by nylon downstream sectors.

Why it is so hard for NFY plants to raise prices? What is the actual condition of nylon terminal market?
In fact, sales of cloth factories had improved recently. For example, some large jet-spinning plants have a good sales/production ratio to around 200-300% last week.