Single leaf stc 52 steel soundproof acoustic black front door for exterior
|Studio soundproof noise insulation door
|Coefficient of sound insulation
|Heat preservation coefficient
|Door leaf thickness
|Door leaf steel plate thickness
|Door frame steel plate Width
A:Yes ,we are. Offering excellent and various goods at competitive price is what we have been keeping doing.
Q2: What kind of Certification did you pass?
A: After relevant institution of professional evaluation, we're qualified for UL, CE, ISO9001, BV, ROHS, etc.
For wooden fire doors, we are qualified for BS-476, EN-1634, UL-10C.
Q3: How can you guarantee your final quality?
A: As for quality control, we've approved four testing procedures:
Initial inspection, re-inspection, final inspection and sampling inspection.
Q4: How is the MOQ of required?
A: We welcome any amount under your requested. but a competitive price is always depends on the quantity increase gradually.
Q5: How long is the production lead time?
A: Usually, T/T 50% deposit to start production, the balance paid before shipping. Lead time about 15-25 days. Contact us if you need more details on Acoustic Door. We are ready to answer your questions on packaging, logistics, certification or any other aspects about Black Front Door、Exterior Metal Door. If these products fail to match your need, please contact us and we would like to provide relevant information.
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