Glass Bottle & Jar Sourcing Guide: 100 FAQs to Avoid Costly Mistakes

We frequently encounter clients asking us about 100 questions regarding bottles. Below is a list of the 100 most frequently asked questions in the field of food glass bottles and jars, compiled based on practical experience. It covers multiple dimensions including product specifications, customization, packaging, transportation, certifications, and usage scenarios, helping clients understand us more quickly.

 

A. Product Specification（1–10）                                                           

1. What is the bottle capacity? What is the difference between filling capacity and brimful capacity?
A: Filling capacity is the recommended usable volume, while brimful capacity is the maximum volume when filled to the rim.

2. What is the neck finish and which caps are compatible?
A: Standard CT / TW neck finishes, compatible with metal, aluminum, or plastic caps.

3. What are the bottle height and base diameter?
A: Detailed dimension sheets or CAD drawings are available.

4. What material is used? Borosilicate or soda-lime glass? 
A: Most food packaging uses soda-lime glass for safety, stability, and cost efficiency. For products with temperature requirements or other special requirements, such as milk bottles or medicine bottles, we use borosilicate glass.

5. Is it heat-resistant? Suitable for hot filling?
A: Yes, suitable for hot filling, typically above 90°C or higher.

6. Is it suitable for refrigeration or freezing?
A: Yes, but avoid sudden temperature changes. Cooling down need to be gradual.

7. Is it microwave safe?
A: Microwave heating with lids is not recommended.

8. Is there any anti-burst design?
A: Stress-controlled bottoms reduce breakage risk.

9. Does it have an anti-slip base?
A: Most models offer anti-slip bases.

10. Are graduation marks available or customizable?
A: Graduations can be molded or printed, depend on customer's design.

 

B. Customized Design & Services（11–20）                                            

11. Can the bottle color be customized?
A: Clear, amber, green are available.

12. Can you do silk printing, decal firing, or spraying?
A: Yes, multiple decoration techniques are available.

13. Can logos or graphics be customized?
A: OEM/ODM branding is supported.

14. Can the bottle shape be customized?
A: Mold customization is available subject to MOQ.

15. What is the MOQ for customization?
A: For our regular stocks, MOQ is 1 Pallet. For new production, MOQ is 200K~300K subject to bottle or jar size.

16. What is the customization lead time?
A: Mould lead time is 25~30 days. After sample confirmed and every order details confirmed, mass production lead time is about 25~30days.

17. Do you offer design services?
A: Structural and visual design support is available.

18. Is a frosted finish available?
A: Yes, full or partial frosting is available.

19. Can you do clear, semi-transparent, or opaque finishes?
A: Achieved through coating or material selection.

20. Is UV protection available?
A: Via dark glass or UV coatings.

 

C. Packaging & Transportation（21–30）                                               

21. How many bottles per carton?
A: Typically 12 or 24 pcs per carton for export requirement. The number of bottles in a case depends on the size of the bottles or jars, generally designed for a gross weight of no more than 15kgs.

22. Carton or pallet packaging?
A: Carton, pallet, or combined packaging available.

23. Is shockproof packaging used?
A: Dividers or protective materials are used.

24. Do you meet export packaging standards?
A: Compliant with US and EU export standards. 

25. Can barcodes or labels be applied?
A: Yes, labeling per customer request.

26. Can different models be mixed?
A: We are standard IS MACHINE production and equipped with Automatic Bottle Inspection machine and Automatic Packing machine, do not support the mixing of different bottles.

27. What is the delivery time?
A: 3–7 days for stock, 25–30 days for custom.

28. Can you arrange logistics?
A: Domestic and international logistics supported.

29. Do you ship overseas?
A: Sea, rail, or air shipment available.

30. Do you offer container loading services?
A: Container loading and securing guidance available.

 

D. Qualification & Certification（31–40）                                               
31. Do you have food-grade certifications?
A: Yes. Our glass bottles comply with FDA and EU food-contact regulations and are safe for food packaging.
 

32. Are the bottles compliant with FDA or EU regulations?
A: Yes, compliant with FDA and EU food packaging regulations. 
 

33. Are you ISO certified?
A: Our factory is ISO quality management certified.
 

34. Do you provide third-party test reports?
A: Third-party test reports can be provided upon request.
 

35. Is chemical resistance tested?
A: Glass offers excellent acid and alkali resistance, ideal for vinegar and sauces.
 

36. Is compression strength tested?
A: Compression and drop tests are conducted before shipment.
 

37. Is thermal resistance tested?
A: Passed thermal shock tests for hot-filling applications.
 

38. Is breakage rate controlled?
A: Export breakage rate is controlled below 1%.
 

39. Is batch traceability available?
A: Batch numbering ensures quality traceability.
 

40. Do you offer quality assurance or warranty?
A: Factory QC and after-sales support are provided.

 

E. Fittings & Seals（41–50）                                                                   
41. Do you supply caps? What materials are used?
A: Metal, aluminum, and plastic caps are available.
 

42. Do you offer tamper-evident or leak-proof caps?
A: Tamper-evident and leak-proof options are available.
 

43. Can different cap types be matched?
A: Screw caps, lug caps, and press-on caps are supported.
 

44. Are sealing liners included?
A: PE, PVC, or food-grade liners are available.
 

45. Can pumps or sprayers be supplied?
A: Suitable for sauces, oils, or personal care use.
 

46. Can induction seals be used?
A: Aluminum induction sealing solutions are supported.
 

47.Do you provide labels or hang tags?
A: Label customization and application are available.
 

48. Is shrink wrap available?
A: Neck or full-body shrink wrap is available.
 

49. Do you offer gift boxes or bags?
A: Our glass bottles or jars are mainly for food factories, food processing factories, filling factories, etc., and we rarely provide gift box packaging.

 

50. Can bottles and caps be supplied as a set?
A: One-stop bottle and closure supply is available.

 

F. Usage Scenarios（51–60）                                                                 
51. Is it suitable for soy sauce, vinegar, and chili sauce?
A: Ideal for liquid and semi-viscous foods.

52. Is it suitable for honey or jam?
A: Glass is stable and odor-neutral.
 

53. Is it suitable for beverages or alcohol?
A: Suitable for juices, spirits, and fermented drinks.
 

54. Is it suitable for dry goods or granules?
A: Works well with airtight closures.
 

55. Is it suitable for baby food?
A: Food-grade glass ensures safety.
 

56. Is it suitable for supplements or herbal products?
A: Suitable for nutraceutical and herbal products.
 

57. Is it suitable for condiment gift sets?
A: Premium customization supported.
 

58. Is it suitable for E-commerce shipping?
A: Reinforced packaging solutions are available.
 

59. Is it suitable for retail display?
A: Clear appearance enhances shelf display.

 

60. Is it suitable for US and EU markets?
A: Yes, our bottles meet US and EU standards and are suitable for export markets.

 

G. Purchasing & Cooperation（61–70）                                                 
61. What is the unit price?
A: Price depends on specifications, quantity, and customization.
 

62. Do you offer tiered pricing?
A: Larger volumes receive better pricing.
 

63. Is VAT included?
A: VAT-inclusive or exclusive quotes available.
 

64. What payment methods are accepted?
A: T/T and bank transfer accepted.
 

65. Do you support long-term cooperation?
A: Long-term partnerships are welcome.
 

66. Are samples available?
A: Samples available, freight collect.
 

67. Do you provide official quotations?
A: Official quotes in PDF or Excel.
 

68. Do you offer product catalogs?
A: Digital catalogs available.
 

69. Do you have reference cases?
A: Export client references available.
 

70. Can we sign annual agreements?
A: Annual or framework agreements supported.

 

H. Manufacture & Stocks（71–80）                                                       
71. Are the bottles manufactured in-house?
A: Supported by stable manufacturing partners.
 

72. Do you keep stock?
A: Regular models are kept in stock.
 

73. Can you replenish quickly?
A: Fast production scheduling available.
 

74. Can you make samples or prototypes?
A: Sampling and testing supported.
 

75. Can we visit the factory?
A: On-site or virtual visits welcome.
 

76. Is video inspection possible?
A: Remote video inspection supported.
 

77. Do you provide production updates?
A: Production status updates available.
 

78. Do you provide stock lists?
A: Real-time inventory info available.
 

79. Do you stock caps?
A: Common caps are stocked.
 

80. Can you provide delivery schedules?
A: Monthly or quarterly schedules supported.

 

I. Environmental & sustainability（81–90）                                              
81.Is glass recyclable?
A: 100% recyclable material.
 

82. Is it environmentally friendly?
A: Free from harmful substances.
 

83. Do you support eco-friendly packaging?
A: Reduced-plastic packaging options available.
 

84. Do you have environmental certifications?
A: Environmental documents available upon request.
 

85. Is reuse supported?
A: Durable and suitable for reuse.
 

86. Do you support plastic-free solutions?
A: All-glass with metal cap solutions available.
 

87. Do you support glass recycling initiatives?
A: Open to sustainability collaborations.
 

88. Do you provide carbon footprint data?
A: Support available for sustainability audits.
 

89. Can you support sustainability marketing?
A: Sustainability marketing materials available.
 

90. Do you support sustainable supply chains?
A: Committed to long-term sustainable partnerships.

 

J. Service & Support （91–100）                                                         
91. Do you provide after-sales service?
A: Ongoing after-sales support provided.
 

92. How are breakages handled?
A: Handled per contract or mutual agreement.
 

93. Do you assign account managers?
A: Dedicated account managers assigned.
 

94. Do you provide usage instructions?
A: Instructions in Chinese and English available.
 

95. Do you offer packaging advice?
A: Packaging advice based on logistics and retail needs.
 

96. Do you share market insights?
A: Industry insights shared regularly. 
 

97. Do you provide competitor comparisons?
A: Comparative analysis support available.
 

98. Do you offer sales recommendations?
A: Sales advice based on market experience.
 

99. Do you provide images or videos?
A: High-resolution images and videos available.
 

100. Do you support long-term OEM/ODM cooperation?
A: Long-term OEM/ODM partnerships worldwide are welcome.