ESD(electro-static discharge) is the American National Standard, namely ANSI/ESD S20.20
ESD is a kind of electrical ion excitation generally occurred in daily life. In spite of the extremely
short (ns) time of occurrence, the ESD energy (njoules~mjoules) can cause harm to the personnel
and electronic components in certain circumstances.
This company can provide:
Conducting materials with resistance value of
antistatic materials with resistance value of
semi-conductive materials with resistance of
(specific gravity 1.05)
Polystyrene is one of the earliest (1939) industrialized plastics, which can be produced into EPS
products. The material is widely used in heat preservation transport of appliances, meters,
electronics and other industries. The material is featured with low price, easy acquisition of raw
materials, and effective reduction of quantity and costs.
Advantages:easy for molding, low gravity, better than PET, large molecule, easy for processing
Disadvantages:low in wear resistance, low performance in withstanding the impact loads
(specific gravity 0.92)
Polypropylene is a kind of general-purpose plastic of good character of service and is highly
valued inrecent years. Polypropylene possesses fine physical performance and recoverability,
thus is popular in long distance transport and packages. Due to its high crystallinity, the mechanical
capacity of the material is greatly improved, which in turn brings the products made of such materials
high flexibility.
Advantages:high temperature resistance, uvioresistant, low gravity and abrasion resistance.
Disadvantages:low rigidity, slow molding, opacity.
(specific gravity 1.34)
Polyethylene glycol terephthalate (PET, i.e. polyester)is one of commodity polymer materials. It can
be widely applied in various fields such as production of fiber, thin film and bottles. The thin films
can be made into thicker sheets which can be molded by vacuum extraction (called Tray or Blister
for short). It is also a good and important packing material for electronic industry. Falling into
s into conducting and emiconducting material which is a solution for electrostatic discharge(ESD).
Advantages: good transparency, excellent rigidity, multiple recycling
Disadvantages: easily broken under high pressure, high gravity
(specific gravity 1.36)
Polystyrene(PVC) is the plastic which developed along with the chlorine industry and is also one
of the plastic which was early industrialized. For the past few years, its development was restricted
by the pressure from environmental protection bureaus. However, it is also widely welcomed
because of the following advantages: 1. huge amount of chlorine in polystyrene molecule provides
good fire resistance; 2, its output ranks only second to that of polyethylene, so the price is quite
competitive; 3, easy recycling.
Advantages: low cost, good toughness, excellent rigidity, high wearing coefficient
Disadvantages: chlorine comes out during production, gives out a big amount toxic gas while burning
EU issued in its official reports the Waste Electrical and Electronic Equipment (WEEE) and
Restriction of the use of certain Hazardous Substances (ROHS) (two regulations for short) on Feb.
13 2003 and were implemented on Aug. 1 2004. From July 1 2006 on, the new electrical and
electronic equipment launched into the market shall not apply lead, mercury, chromium, hexavalent
chromium, PBB (polybrominated biphenyl) and PBDE (Polybrominated Diphenyl Ethers).
All the materials including PVC, PET, PS, PP have passed SGS testing and meet the requirements of
EU Environmental Certificate.