Please clarify

If my corps currently buy 175 quality supplies , and i decide to lower to to say 150 inorder to decrease corp costs so that more profit would hopefully be made , will the lower quality final products sell well? i know that final product will be of lower quality and lower price will be charged.

in other words, will demand for my corps products fall by large amounts as i lower the quality of raw materials/supplies ?

please clarify and give me your useful advice and tips on this . thanks!

Demand won't fall but quality will. When quality falls the price that your goods sell for drops accordingly. In your sale strategy, make sure that you are following product quality and you will get the extra from higher quality products. Now, when your product (through upgrades and quality of supplies) hits about 200 the costs start to balance out with the benefits. So, for the most part, for most corporations that is, products made from supplies at an average of 175 will earn you more money than products at 150.

but i think i read somewhere that the cost reduction more than compensates for the fall in price charged, especially when corps are upgraded

is it true?

for supplies, no. you really need to have the highest output Q you can. their are way of cutting the cost of supplies, with tricky supply gimmicks, like manually selling low Q FMUs to your corps. but cutting back on over all supply quality, is only valuable if the corp hasn't fully upgraded, as it may not be able to use the full effect of normal supply levels. once it matures, you will want the higher base supply. or use an advanced supply gimmick.