lunch box keep food warm for school/insulated lunch box

Primary Competitive Advantages

1. We have more than 16 years of experience in OEM and ODM

2. The material all we use are food grade stainless steel 304+PP

3. We have our own printing department, which means we can control each step of quality by ourself.

       Lunch box display product pictures

Quality control:

1:Quality control is a high-priority activity in vacuum flask production.We have established an integrated quality system with Quality Organization and QC center,which are resposible for company'sQC,OQC,LFGB,SGS,FDA, and reliablity test.All products qualtiy is under the monitor,we ensure that every order is living up to customer's requirements and that applicable legal standards are met.

2:Every order we checked throughout the production process by our own team of delicate quality controller.The final inspection will be taken place after all goods are packed and ready for shipping.

 Packing:

Cleaning→QC Inspection→Packing→QC Inspection→Put into Storage→Container Loading

After service

1:Customers send us details about the faulty such as tracking No.pictures or video.2: Faulty is reported to QC deparment by sales.3:Possible reasons of faulty are feedback to customers.4:Customers send faulty back to factory for maintenance  at Longxingsheng cost within warranty or Longxingsheng sends new product for replacement directly at Longxingsheng's cost with warranty.

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