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Ice box quality control process:


1  The raw material must be food grade HDPE, 5502 of Shanghai SECCO


2   In the process of producing plastic boxes, operators should check the boxes for black spots, whether                       there are hole or not, and the production manager will have to check them irregularly


3   In the coolant filling process, each product must be check the weight , ultrasonic welding   where    there   are     holes   , and inverted to packing. After 24 hours, each carton must be opened to check for leaks, Without any     problem, the product can be shipped and loaded

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