Phenolic plastics have excellent strength, heat resistance, moisture resistance, dimensional stability, which help to improve the rotary strength and reduce the diviations of parts, noise and the wear of carbon brush. At the same time, with the good machinability, it is easy to do the machining of cutting, spot welding.

With good dimensional precision propurties, the materials can be to replace metal due to its forming precision, equal square, heat resistance dimensional stability, low linear expansion rate and many other advantages to improve the dimensional accuracy of products, It is widely used in commutator, aerospace industry.

Product category	National standard	Our standard	Product main features and applications
	CB/T1404.1 -2008	QB/2017.1 (QB/2005.5)
General type	PF(WD30+XD20) .M.X	S828J (PF2A4-161J)	For low voltage electrical parts and high-end kitchen appliances with good insulation and heat resistance.
	PF(WD30+MD20) .M.A	S818J-A-1	No ammonia release. For coil skeleton, temperature controller and micro switch so on
Electronic products category I (Ammonia free)
	PF(GF50+WD20) .M.A	S818J-A-2	With high strength and no ammonia release, for coil skeleton and auto parts areas
	PF(GF30+WD20) .M.A	S818J-A-3	No ammonia release. For coil skeleton, temperature controller and micro switch so on
	PF(GF10+PS10) .M.A	S818J-A-4	No ammonia release. For coil skeleton, temperature controller and micro switch so on
	PF(GF50+XD10) .Q.M	S818J-B series	For commutator with high strength, good heat resistance and excellent dimensional stability
Commutator
Auto parts	PF(GF40+MD15) .M.M	S818J-C series	Applied to auto parts with high mechanical strength, good abrasion resistance and chemical resistance
Electronic Products Category II (not ammonia free)	PF(GF20+PS10) .M.E	S818J-D series	Widely used in general coil skeleton, temperature controller, micro switch, etc

Company developed ammonia-free phenolic resin as a binder to produce a series of ammonia-free thermosetting phenolic molding plastics which are mainly used in a variety of transformer coil skeleton, temperature controller, micro switch without ammonia release.

Product	Ammonia release	Presence of red phosphorus	Presence of halogen	Applications
S818J-A-1	No	Yes	No	Flame retardant, high heat resistance, good insulation, applied in coil skeleton and micro switch, etc
S818J-A-2	No	No	No	Glass fiber reinforced, high heat resistance, flame retardant, high insulation, used in high strength coil frame and auto parts
S818J-A-3	No	No	No	Flame retardant, high heat resistance, good insulation, used in coil skeleton and micro switch, etc
S818J-A-4	No	No	No	Flame retardant, high heat resistance, good insulation, used in coil skeleton and micro switch, etc