... L/C opened. ISO Certification FAQ(Frequently Asked Questions)1. How to place an inquiry or order? Answer ... it to: Hejian Solidkey Petroleum Machinery Co., Ltd.,No.15, Yangguang Community, Beihuan Road, Hejian City, Hebei Province, ... days, to East-south Asia is always less than 15 days.3.Can I expect a quality products? ... 14 3/4”)381mm(15”),393.7m(15 1/2”),406.4mm(16”)444.5mm(17 1/2”),508mm(20”),558mm ...