Chongqing ACME Tech. Co., Ltd. is an ISO9001 certified manufacturer of acetylenic diols series coating additives. Its SURFADOL® products are equivalent to the Surfynol range offered by Air Products. The base product, SURFADOL® 541 (2,4,7,9-tetramethyl-5-decyn-4,7-diol, CAS #126-86-3) is a solid in its pure form. SURFADOL series wetting agents, defoamers and dispersants have been approved and used by global leading coating manufacturers.