PVC Pipe Diameter(mm) 

16-40mm

dual pipe

20-63mm

dual pipe

20-63mm 

75-200mm

160-315 mm

315-630 mm

Extruder

SJZ51/105 

SJZ65/132 

SJZ51/105 

SJZ65/132 

SJZ80/156 

SJZ92/188 

Extruder power (kw)

18.5AC 

37AC 

18.5AC 

37AC 

55AC 

110DC 

linespeed (m/min)

0.5-10 

0.5-15 

0.5-10

0.5-8 

0.5-6

0.5-4

capacity (kg/h)

120

250

80-120

180-250

280-350

500-600

Is there quality control on all production lines?

Yes, all production lines have adequate quality
control

Do the QA/QC inspectors work independently from the production line?

Yes

Who does the QC/QA Manager/Supervisor report to?

GM -- Mr. Yanzhong Li

How many QA/QC inspectors in total?

4

Number. of Employees in Each Production Line

Supervisor  1 
No. of Operators   29

No. of In-line QC/QA    2

Does the company have a supplier assessment procedure?

Yes

Does the company have an updated list of approved suppliers?

Yes

Does the company establish and implement a standard procedure for purchasing contract review and approval?

Yes, with written standard procedures

Does the company keep its supplier assessment reports?

Yes, assessment reports are available for the last 1-3 years

Are the company’s purchasing documents sufficient to ensure product safety control and their customers’ requirements?

Yes, the purchasing document includes all the
information required

Is there a procedure to conduct random product inspections after final packaging?

Yes, with clear standard and written inspection records

Is customer feedback, including complaints, clearly recorded and
maintained?

Yes, with a standard feedback form and records

Are there any clear procedures for handling customer complaints?

Yes, with clear procedures and written records

Is there a closed-loop corrective action system in place?

Yes

Can finished/packaged products be traced by lot identification to the
appropriate raw material test reports?

Yes, with procedures to trace raw materials

Is there a product alert and recall procedure?

No