Spring rider contains two different styles: high density polyethylene (PE) and rotational molding. Our company applies for 15mm-19mm PE which is uvioresistant and environment-oriented. And it is shaped by computerized cutting equipment. The carriage bolts are stable, safe and durable. The handrail is skid proof. The spring is applied for the break safety spring and it conforms to CE standard. The rotational molding is made of LLDPE which imported from Korea. It is beautiful and environment-oriented. Spring Rider always gets bulk order from many government and supermarkets.