... the raw materials formaldehyde, formic acid, caustic soda, acetaldehyde Downstream products pentaerythritol ester, pentaerythritol stearic acid ester, pentaerythritol rosin ester, pentaerythritol oleate, monostearin, sodium, synthetic ... , unsaturated polyester resin (Polaroid plate special type), water loss malic acid resin (Type 424), 424 pentaerythritol rosin resin Pentaerythritol