starch plastic ... featured product fob price: $ - $ / ton min. order: tons . oem service we have advance equipment size, thickness, color, printing and packaging are all customized !!!...
polyester is poly( -hydroxypropanoic acid) (polylactic acid, pla), produced from -hydroxypropanoic acid (lactic acid) . the lactic acid, traditionally made from ethanal (acetaldehyde) and hydrogen cyanide, is now being increasingly produced by an alternative method, the fermentation of sugars from maize (corn...